31 Jon Mierzwa
31 Jon Mierzwa
Height: 6-0
Weight: 195
Bats/Throws: R/R
Year: Sr.
Hometown: Laurel, Md.
High School: Reservoir
Position: P
app 12
gs 12
w 7
l 0
sv 0
ip 66.2
era 2.02
k 72

2018 (Game-by-Game): ABCA/Rawlings All-Region Team ... D3Baseball.com All-Region Team ... First Team All-Landmark ... Landmark Academic Honor Roll ... picked for Northwoods League Major League Showcase in summer after season ... appeared in 13 games, starting in 12 ... recorded four wins ... threw 81 strikeouts in 60.2 innings pitched for a 3.12 ERA.

2017 (Game-by-Game): ABCA/Rawlings All-Region Team ... D3Baseball.com All-Region Team ... First Team All-Landmark ... appeared in 13 games, starting 12 … recorded eight wins … threw 90 strikeouts in 65.0 innings pitched for a 2.63 ERA.

2016 (Game-by-Game): Made 12 appearances with five starts ... Second Team All-Landmark ... recorded three wins and one save ... threw 43 strikeouts in 3.71 innings pitched ... recorded a 2.65 ERA ... threw 13 Ks in Catholic's 6-0 victory over Juniata, April 30 and was selected Landmark Athlete of the Week, May 2.

High School: Member of Team Maryland in 2014 Maryland Cup ... named Howard County First Team his senior year ... named to 2015 Baltimore Sun All Metro First Team ... 2015 Washington Post All Metro Honorable Mention ... selected to District V Team his senior year.

Personal: Son of Jerry and Mimi Mierzwa ... has two siblings, Chris and Tim ... majoring in computer science.

Recent Games
Apr 28 at Drew L, 8-7
May 1 at Marymount (Va.) L, 4-3
May 4 at Swarthmore L, 3-2
May 10 vs. Moravian L, 1-0
May 11 vs. Scranton W, 5-4
May 11 vs. Moravian L, 3-1
Statistics category Overall Conf
Games 12 6
Plate appearances 0 0
At Bats 0 0
Runs 0 0
Hits 0 0
Doubles - -
Triples - -
Home Runs - -
Runs Batted In 0 0
Total bases 0 0
Walks - -
Hit by pitch - -
Strikeouts - -
Sacrifice Flies - -
Sacrifice Hits - -
Hit into double play - -
Stolen Bases - -
Caught Stealing - -
Batting Average - -
On Base Percentage - -
Slugging Percentage - -
Appearances 12 6
Games started 12 6
Wins 7 4
Losses 0 0
Saves 0 0
Complete Games 2 1
Shutouts - -
Innings Pitched 66.2 36.1
Hits 42 26
Runs 21 12
Earned Runs 15 8
Walks 40 16
Strikeouts 72 39
Strikeouts per Game 9.72 9.66
Doubles Allowed 7 5
Triples Allowed 1 1
Home Runs Allows 3 1
At Bats Against 229 128
Batting Average Against .183 .203
Earned Run Average 2.02 1.98
Wild pitches 5 2
Hit Batters 6 5
Balks - -
Sacrifice Flies Allowed 2 1
Sacrifice Hits Allowed 5 3
Total Chances 21 11
Put Outs 7 3
Assists 12 6
Errors 2 2
Fielding Percentage .905 .818
Double Plays - -
Stolen Bases Allowed 18 11
Runners Caught Stealing 5 2
Runners Caught Stealing Percentage .217 .154
Passed Balls - -
Catcher's Interference - -
Date Opponent Score ab r h 2b 3b hr rbi bb k sb cs
Feb 15 Cabrini L, 6-3 0 0 0 - - - 0 - - - -
Feb 15 Cabrini L, 6-3 - - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - - -
Feb 24 New Paltz   - - - - - - - - - - -
Feb 26 at Hood L, 6-5 - - - - - - - - - - -
Mar 2 at McDaniel W, 6-3 0 0 0 - - - 0 - - - -
Mar 2 at McDaniel W, 17-9 - - - - - - - - - - -
Mar 9 at #3 Christopher Newport W, 4-3 0 0 0 - - - 0 - - - -
Mar 11 vs. Penn College W, 15-3 - - - - - - - - - - -
Mar 12 vs. Dean W, 8-2 - - - - - - - - - - -
Mar 12 vs. Dean W, 12-4 - - - - - - - - - - -
Mar 13 vs. Lancaster Bible W, 11-3 - - - - - - - - - - -
Mar 16 at Elizabethtown W, 6-3 0 0 0 - - - 0 - - - -
Mar 16 at Elizabethtown L, 12-8 - - - - - - - - - - -
Mar 17 at Elizabethtown W, 5-2 - - - - - - - - - - -
Mar 23 Susquehanna L, 5-4 - - - - - - - - - - -
Mar 24 Susquehanna L, 5-3 0 0 0 - - - 0 - - - -
Mar 24 Susquehanna L, 17-2 - - - - - - - - - - -
Mar 26 #11 Johns Hopkins L, 12-2 - - - - - - - - - - -
Mar 27 York (Pa.) W, 15-12 - - - - - - - - - - -
Mar 30 Scranton L, 11-10 0 0 0 - - - 0 - - - -
Mar 30 Scranton W, 7-1 - - - - - - - - - - -
Mar 31 Scranton L, 7-6 - - - - - - - - - - -
Apr 6 at Juniata W, 8-1 0 0 0 - - - 0 - - - -
Apr 6 at Juniata W, 7-2 - - - - - - - - - - -
Apr 7 at Juniata W, 6-4 - - - - - - - - - - -
Apr 8 at Gallaudet W, 23-2 - - - - - - - - - - -
Apr 10 Stevenson W, 8-5 - - - - - - - - - - -
Apr 13 Moravian W, 4-1 0 0 0 - - - 0 - - - -
Apr 13 Moravian W, 6-5 - - - - - - - - - - -
Apr 14 Moravian W, 12-4 - - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 12-7 - - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 10-8 - - - - - - - - - - -
Apr 19 at Stevens W, 5-2 0 0 0 - - - 0 - - - -
Apr 19 at Stevens W, 8-7 - - - - - - - - - - -
Apr 22 at Stevenson L, 8-1 - - - - - - - - - - -
Apr 24 Marymount (Va.) W, 11-10 - - - - - - - - - - -
Apr 27 at Drew W, 4-0 0 0 0 - - - 0 - - - -
Apr 27 at Drew W, 3-2 - - - - - - - - - - -
Apr 28 at Drew L, 8-7 - - - - - - - - - - -
May 1 at Marymount (Va.) L, 4-3 - - - - - - - - - - -
May 4 at Swarthmore L, 3-2 0 0 0 - - - 0 - - - -
May 10 vs. Moravian L, 1-0 0 0 0 - - - 0 - - - -
May 11 vs. Scranton W, 5-4 - - - - - - - - - - -
May 11 vs. Moravian L, 3-1 - - - - - - - - - - -
Date Opponent Score hbp sf sh tb xbh hdp go fo go/fo pa
Feb 15 Cabrini L, 6-3 - - - 0 0 - - - - 0
Feb 15 Cabrini L, 6-3 - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - -
Feb 24 New Paltz   - - - - - - - - - -
Feb 26 at Hood L, 6-5 - - - - - - - - - -
Mar 2 at McDaniel W, 6-3 - - - 0 0 - - - - 0
Mar 2 at McDaniel W, 17-9 - - - - - - - - - -
Mar 9 at #3 Christopher Newport W, 4-3 - - - 0 0 - - - - 0
Mar 11 vs. Penn College W, 15-3 - - - - - - - - - -
Mar 12 vs. Dean W, 8-2 - - - - - - - - - -
Mar 12 vs. Dean W, 12-4 - - - - - - - - - -
Mar 13 vs. Lancaster Bible W, 11-3 - - - - - - - - - -
Mar 16 at Elizabethtown W, 6-3 - - - 0 0 - - - - 0
Mar 16 at Elizabethtown L, 12-8 - - - - - - - - - -
Mar 17 at Elizabethtown W, 5-2 - - - - - - - - - -
Mar 23 Susquehanna L, 5-4 - - - - - - - - - -
Mar 24 Susquehanna L, 5-3 - - - 0 0 - - - - 0
Mar 24 Susquehanna L, 17-2 - - - - - - - - - -
Mar 26 #11 Johns Hopkins L, 12-2 - - - - - - - - - -
Mar 27 York (Pa.) W, 15-12 - - - - - - - - - -
Mar 30 Scranton L, 11-10 - - - 0 0 - - - - 0
Mar 30 Scranton W, 7-1 - - - - - - - - - -
Mar 31 Scranton L, 7-6 - - - - - - - - - -
Apr 6 at Juniata W, 8-1 - - - 0 0 - - - - 0
Apr 6 at Juniata W, 7-2 - - - - - - - - - -
Apr 7 at Juniata W, 6-4 - - - - - - - - - -
Apr 8 at Gallaudet W, 23-2 - - - - - - - - - -
Apr 10 Stevenson W, 8-5 - - - - - - - - - -
Apr 13 Moravian W, 4-1 - - - 0 0 - - - - 0
Apr 13 Moravian W, 6-5 - - - - - - - - - -
Apr 14 Moravian W, 12-4 - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 12-7 - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 10-8 - - - - - - - - - -
Apr 19 at Stevens W, 5-2 - - - 0 0 - - - - 0
Apr 19 at Stevens W, 8-7 - - - - - - - - - -
Apr 22 at Stevenson L, 8-1 - - - - - - - - - -
Apr 24 Marymount (Va.) W, 11-10 - - - - - - - - - -
Apr 27 at Drew W, 4-0 - - - 0 0 - - - - 0
Apr 27 at Drew W, 3-2 - - - - - - - - - -
Apr 28 at Drew L, 8-7 - - - - - - - - - -
May 1 at Marymount (Va.) L, 4-3 - - - - - - - - - -
May 4 at Swarthmore L, 3-2 - - - 0 0 - - - - 0
May 10 vs. Moravian L, 1-0 - - - 0 0 - - - - 0
May 11 vs. Scranton W, 5-4 - - - - - - - - - -
May 11 vs. Moravian L, 3-1 - - - - - - - - - -
Date Opponent Score gs w l sv ip h r er era bb k hr
Feb 15 Cabrini L, 6-3 1 0 0 0 3.0 0 1 1 3.00 2 4 -
Feb 15 Cabrini L, 6-3 - - - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - - - -
Feb 24 New Paltz   - - - - - - - - - - - -
Feb 26 at Hood L, 6-5 - - - - - - - - - - - -
Mar 2 at McDaniel W, 6-3 1 1 0 0 6.0 3 2 0 0.00 2 3 -
Mar 2 at McDaniel W, 17-9 - - - - - - - - - - - -
Mar 9 at #3 Christopher Newport W, 4-3 1 1 0 0 5.0 5 2 2 3.60 5 9 -
Mar 11 vs. Penn College W, 15-3 - - - - - - - - - - - -
Mar 12 vs. Dean W, 8-2 - - - - - - - - - - - -
Mar 12 vs. Dean W, 12-4 - - - - - - - - - - - -
Mar 13 vs. Lancaster Bible W, 11-3 - - - - - - - - - - - -
Mar 16 at Elizabethtown W, 6-3 1 1 0 0 4.2 6 3 3 5.79 2 2 -
Mar 16 at Elizabethtown L, 12-8 - - - - - - - - - - - -
Mar 17 at Elizabethtown W, 5-2 - - - - - - - - - - - -
Mar 23 Susquehanna L, 5-4 - - - - - - - - - - - -
Mar 24 Susquehanna L, 5-3 1 0 0 0 7.0 4 3 2 2.57 2 10 -
Mar 24 Susquehanna L, 17-2 - - - - - - - - - - - -
Mar 26 #11 Johns Hopkins L, 12-2 - - - - - - - - - - - -
Mar 27 York (Pa.) W, 15-12 - - - - - - - - - - - -
Mar 30 Scranton L, 11-10 1 0 0 0 5.2 4 4 1 1.59 2 6 1
Mar 30 Scranton W, 7-1 - - - - - - - - - - - -
Mar 31 Scranton L, 7-6 - - - - - - - - - - - -
Apr 6 at Juniata W, 8-1 1 1 0 0 7.0 2 1 1 1.29 1 7 -
Apr 6 at Juniata W, 7-2 - - - - - - - - - - - -
Apr 7 at Juniata W, 6-4 - - - - - - - - - - - -
Apr 8 at Gallaudet W, 23-2 - - - - - - - - - - - -
Apr 10 Stevenson W, 8-5 - - - - - - - - - - - -
Apr 13 Moravian W, 4-1 1 1 0 0 6.0 5 1 1 1.50 4 7 -
Apr 13 Moravian W, 6-5 - - - - - - - - - - - -
Apr 14 Moravian W, 12-4 - - - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 12-7 - - - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 10-8 - - - - - - - - - - - -
Apr 19 at Stevens W, 5-2 1 1 0 0 7.0 3 2 2 2.57 5 10 2
Apr 19 at Stevens W, 8-7 - - - - - - - - - - - -
Apr 22 at Stevenson L, 8-1 - - - - - - - - - - - -
Apr 24 Marymount (Va.) W, 11-10 - - - - - - - - - - - -
Apr 27 at Drew W, 4-0 1 1 0 0 6.0 5 0 0 0.00 5 7 -
Apr 27 at Drew W, 3-2 - - - - - - - - - - - -
Apr 28 at Drew L, 8-7 - - - - - - - - - - - -
May 1 at Marymount (Va.) L, 4-3 - - - - - - - - - - - -
May 4 at Swarthmore L, 3-2 1 0 0 0 3.0 3 2 2 6.00 0 2 -
May 10 vs. Moravian L, 1-0 1 0 0 0 6.1 2 0 0 0.00 10 5 -
May 11 vs. Scranton W, 5-4 - - - - - - - - - - - -
May 11 vs. Moravian L, 3-1 - - - - - - - - - - - -
Date Opponent Score tc po a e fpct dp sba rcs rcs% pb ci
Feb 15 Cabrini L, 6-3 0 0 0 0 - - - - - - -
Feb 15 Cabrini L, 6-3 - - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - - -
Feb 23 New Paltz   - - - - - - - - - - -
Feb 24 New Paltz   - - - - - - - - - - -
Feb 26 at Hood L, 6-5 - - - - - - - - - - -
Mar 2 at McDaniel W, 6-3 1 1 0 0 1.000 - - 1 1.000 - -
Mar 2 at McDaniel W, 17-9 - - - - - - - - - - -
Mar 9 at #3 Christopher Newport W, 4-3 0 0 0 0 - - 6 - - - -
Mar 11 vs. Penn College W, 15-3 - - - - - - - - - - -
Mar 12 vs. Dean W, 8-2 - - - - - - - - - - -
Mar 12 vs. Dean W, 12-4 - - - - - - - - - - -
Mar 13 vs. Lancaster Bible W, 11-3 - - - - - - - - - - -
Mar 16 at Elizabethtown W, 6-3 1 0 1 0 1.000 - 3 - - - -
Mar 16 at Elizabethtown L, 12-8 - - - - - - - - - - -
Mar 17 at Elizabethtown W, 5-2 - - - - - - - - - - -
Mar 23 Susquehanna L, 5-4 - - - - - - - - - - -
Mar 24 Susquehanna L, 5-3 1 0 0 1 .000 - 4 1 .200 - -
Mar 24 Susquehanna L, 17-2 - - - - - - - - - - -
Mar 26 #11 Johns Hopkins L, 12-2 - - - - - - - - - - -
Mar 27 York (Pa.) W, 15-12 - - - - - - - - - - -
Mar 30 Scranton L, 11-10 5 2 2 1 .800 - - - - - -
Mar 30 Scranton W, 7-1 - - - - - - - - - - -
Mar 31 Scranton L, 7-6 - - - - - - - - - - -
Apr 6 at Juniata W, 8-1 1 0 1 0 1.000 - 1 - - - -
Apr 6 at Juniata W, 7-2 - - - - - - - - - - -
Apr 7 at Juniata W, 6-4 - - - - - - - - - - -
Apr 8 at Gallaudet W, 23-2 - - - - - - - - - - -
Apr 10 Stevenson W, 8-5 - - - - - - - - - - -
Apr 13 Moravian W, 4-1 3 1 2 0 1.000 - 2 - - - -
Apr 13 Moravian W, 6-5 - - - - - - - - - - -
Apr 14 Moravian W, 12-4 - - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 12-7 - - - - - - - - - - -
Apr 17 St. Mary's (Md.) W, 10-8 - - - - - - - - - - -
Apr 19 at Stevens W, 5-2 0 0 0 0 - - - 1 1.000 - -
Apr 19 at Stevens W, 8-7 - - - - - - - - - - -
Apr 22 at Stevenson L, 8-1 - - - - - - - - - - -
Apr 24 Marymount (Va.) W, 11-10 - - - - - - - - - - -
Apr 27 at Drew W, 4-0 0 0 0 0 - - 1 1 .500 - -
Apr 27 at Drew W, 3-2 - - - - - - - - - - -
Apr 28 at Drew L, 8-7 - - - - - - - - - - -
May 1 at Marymount (Va.) L, 4-3 - - - - - - - - - - -
May 4 at Swarthmore L, 3-2 2 1 1 0 1.000 - - - - - -
May 10 vs. Moravian L, 1-0 7 2 5 0 1.000 - 1 1 .500 - -
May 11 vs. Scranton W, 5-4 - - - - - - - - - - -
May 11 vs. Moravian L, 3-1 - - - - - - - - - - -
  g ab r h 2b 3b hr rbi bb k sb cs avg obp slg
2015-16 12 0 0 0 - - - 0 - - - - - - -
2016-17 13 0 0 0 - - - 0 - - - - - - -
2017-18 13 0 0 0 - - - 0 - - - - - - -
2018-19 12 0 0 0 - - - 0 - - - - - - -
Total 50 0 0 0 - - - 0 - - - - - - -
  g hbp sf sh tb xbh hdp go fo go/fo pa
2015-16 12 - - - 0 0 - - - - 0
2016-17 13 - - - 0 0 - - - - 0
2017-18 13 - - - 0 0 - - - - 0
2018-19 12 - - - 0 0 - - - - 0
Total 50 - - - 0 0 - - - - 0
  app gs w l sv cg ip h r er bb k k/9 hr era
2015-16 12 5 3 2 1 2 37.1 32 20 11 18 43 10.37 - 2.65
2016-17 13 12 8 1 0 - 65.0 46 19 19 24 90 12.46 5 2.63
2017-18 13 12 4 1 1 1 60.2 42 28 21 39 81 12.02 4 3.12
2018-19 12 12 7 0 0 2 66.2 42 21 15 40 72 9.72 3 2.02
Total 50 41 22 4 2 5 229.2 162 88 66 121 286 11.21 12 2.59
  g tc po a e fpct dp sba rcs rcs% pb ci
2015-16 12 16 1 12 3 .813 1 2 1 .333 - -
2016-17 13 16 5 10 1 .938 1 3 2 .400 - -
2017-18 13 20 2 18 0 1.000 1 14 - - - -
2018-19 12 21 7 12 2 .905 - 18 5 .217 - -
Total 50 73 15 52 6 .918 3 37 8 .178 - -
  g ab r h 2b 3b hr rbi bb k sb cs avg obp slg
Total 12 0 0 0 - - - 0 - - - - - - -
Conference 6 0 0 0 - - - 0 - - - - - - -
Exhibition - - - - - - - - - - - - - - -
-
Home 4 0 0 0 - - - 0 - - - - - - -
Away 7 0 0 0 - - - 0 - - - - - - -
Neutral 1 0 0 0 - - - 0 - - - - - - -
-
Wins 7 0 0 0 - - - 0 - - - - - - -
Losses 5 0 0 0 - - - 0 - - - - - - -
-
February 1 0 0 0 - - - 0 - - - - - - -
March 5 0 0 0 - - - 0 - - - - - - -
April 4 0 0 0 - - - 0 - - - - - - -
May 2 0 0 0 - - - 0 - - - - - - -
  g hbp sf sh tb xbh hdp go fo go/fo pa
Total 12 - - - 0 0 - - - - 0
Conference 6 - - - 0 0 - - - - 0
Exhibition - - - - 0 0 - - - - 0
-
Home 4 - - - 0 0 - - - - 0
Away 7 - - - 0 0 - - - - 0
Neutral 1 - - - 0 0 - - - - 0
-
Wins 7 - - - 0 0 - - - - 0
Losses 5 - - - 0 0 - - - - 0
-
February 1 - - - 0 0 - - - - 0
March 5 - - - 0 0 - - - - 0
April 4 - - - 0 0 - - - - 0
May 2 - - - 0 0 - - - - 0
  app gs w l sv cg ip h r er bb k k/9 hr era
Total 12 12 7 0 0 2 66.2 42 21 15 40 72 9.72 3 2.02
Conference 6 6 4 0 0 1 36.1 26 12 8 16 39 9.66 1 1.98
Exhibition - - - - - - 0.0 - - - - - .00 - 0.00
-
Home 4 4 1 0 0 - 21.2 13 9 5 10 27 11.22 1 2.08
Away 7 7 6 0 0 2 38.2 27 12 10 20 40 9.31 2 2.33
Neutral 1 1 0 0 0 - 6.1 2 0 0 10 5 7.11 - 0.00
-
Wins 7 7 7 0 0 2 41.2 29 11 9 24 45 9.72 2 1.94
Losses 5 5 0 0 0 - 25.0 13 10 6 16 27 9.72 1 2.16
-
February 1 1 0 0 0 - 3.0 0 1 1 2 4 12.00 - 3.00
March 5 5 3 0 0 - 28.1 22 14 8 13 30 9.53 1 2.54
April 4 4 4 0 0 2 26.0 15 4 4 15 31 10.73 2 1.38
May 2 2 0 0 0 - 9.1 5 2 2 10 7 6.75 - 1.93
  g tc po a e fpct dp sba rcs rcs% pb ci
Total 12 21 7 12 2 .905 - 18 5 .217 - -
Conference 6 11 3 6 2 .818 - 11 2 .154 - -
Exhibition - 0 - - - - - - - - - -
-
Home 4 9 3 4 2 .778 - 6 1 .143 - -
Away 7 5 2 3 0 1.000 - 11 3 .214 - -
Neutral 1 7 2 5 0 1.000 - 1 1 .500 - -
-
Wins 7 6 2 4 0 1.000 - 13 3 .188 - -
Losses 5 15 5 8 2 .867 - 5 2 .286 - -
-
February 1 0 0 0 0 - - - - - - -
March 5 8 3 3 2 .750 - 13 2 .133 - -
April 4 4 1 3 0 1.000 - 4 2 .333 - -
May 2 9 3 6 0 1.000 - 1 1 .500 - -