

Mark Leiter Jr. P
Buffalo Bisons
- Triple-A | International League
- MLB Parent Club: Toronto Blue Jays

- Status: Free Agent
- Full Name: Mark Leiter Jr.
- Age: 28 (March 13, 1991)
- Birthplace: Fort Lauderdale, FL
- Bats/Throws: R/R Ht: 6' 0" Wt: 195
- Draft: Round 22 (2013, PHI)
- MLB Debut: 04/28/2017
- School: New Jersey Institute of Technology
- Relationship(s): son of Mark Leiter, nephew of Al Leiter, cousin of Jack Leiter

Mark Leiter Jr. Career Stats
Mark Leiter Jr. News
- Irvin tosses gem, Pigs fly in road trip finale
- Pigs cap record-setting July with 11-8 win
- Leibrandt breaks record as Pigs complete sweep
- Crawford's Inside-The-Park Slam Lifts Pigs To 8-2 Win
- Cozens, Florimon Homer As Leiter Picks Up Win
- Phillies Triple-A Fall To Yankees, 4-2
- Fightins' Leiter dazzles in playoff primer
Team | Date | Transaction |
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November 4, 2019 | RHP Mark Leiter Jr. elected free agency. |
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September 18, 2019 | Buffalo Bisons activated RHP Mark Leiter Jr. from the 7-day injured list. |
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April 4, 2019 | Buffalo Bisons placed RHP Mark Leiter Jr. on the 7-day injured list. |
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January 28, 2019 | Toronto Blue Jays invited non-roster RHP Mark Leiter Jr. to spring training. |
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November 30, 2018 | Toronto Blue Jays sent RHP Mark Leiter Jr. outright to Buffalo Bisons. |
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November 26, 2018 | Toronto Blue Jays designated RHP Mark Leiter Jr. for assignment. |
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September 3, 2018 | Toronto Blue Jays activated RHP Mark Leiter Jr.. |
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September 1, 2018 | Toronto Blue Jays claimed RHP Mark Leiter Jr. off waivers from Philadelphia Phillies. |
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August 28, 2018 | Philadelphia Phillies designated RHP Mark Leiter Jr. for assignment. |
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August 17, 2018 | Philadelphia Phillies optioned RHP Mark Leiter Jr. to Lehigh Valley IronPigs. |
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August 16, 2018 | Philadelphia Phillies recalled Mark Leiter Jr. from Lehigh Valley IronPigs. |
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July 23, 2018 | Philadelphia Phillies optioned RHP Mark Leiter Jr. to Lehigh Valley IronPigs. |
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June 30, 2018 | Philadelphia Phillies recalled Mark Leiter Jr. from Lehigh Valley IronPigs. |
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June 17, 2018 | Philadelphia Phillies optioned RHP Mark Leiter Jr. to Lehigh Valley IronPigs. |
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May 31, 2018 | Philadelphia Phillies recalled Mark Leiter Jr. from Lehigh Valley IronPigs. |
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May 16, 2018 | Philadelphia Phillies optioned RHP Mark Leiter Jr. to Lehigh Valley IronPigs. |
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May 6, 2018 | Philadelphia Phillies sent RHP Mark Leiter Jr. on a rehab assignment to Clearwater Threshers. |
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March 29, 2018 | Philadelphia Phillies placed RHP Mark Leiter Jr. on the 10-day disabled list retroactive to March 26, 2018. Right forearm strain. |
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July 30, 2017 | Philadelphia Phillies recalled RHP Mark Leiter from Lehigh Valley IronPigs. |
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July 18, 2017 | Philadelphia Phillies optioned RHP Mark Leiter to Lehigh Valley IronPigs. |
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June 23, 2017 | Philadelphia Phillies recalled Mark Leiter from Lehigh Valley IronPigs. |
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June 3, 2017 | Philadelphia Phillies optioned RHP Mark Leiter to Lehigh Valley IronPigs. |
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April 18, 2017 | Philadelphia Phillies selected the contract of Mark Leiter from Lehigh Valley IronPigs. |
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March 31, 2017 | RHP Mark Leiter assigned to Lehigh Valley IronPigs from Reading Fightin Phils. |
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February 23, 2017 | RHP Mark Leiter assigned to Philadelphia Phillies. |
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June 24, 2016 | RHP Mark Leiter assigned to Reading Fightin Phils from Clearwater Threshers. |
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June 23, 2016 | RHP Mark Leiter assigned to Clearwater Threshers from Reading Fightin Phils. |
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May 9, 2016 | RHP Mark Leiter assigned to Reading Fightin Phils from Clearwater Threshers. |
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April 6, 2016 | RHP Mark Leiter assigned to Clearwater Threshers from GCL Phillies. |
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September 4, 2015 | RHP Mark Leiter assigned to GCL Phillies from Clearwater Threshers. |
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August 6, 2015 | RHP Mark Leiter assigned to Clearwater Threshers from Reading Fightin Phils. |
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July 20, 2015 | Reading Fightin Phils activated RHP Mark Leiter from the temporarily inactive list. |
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July 10, 2015 | Reading Fightin Phils placed RHP Mark Leiter on the temporarily inactive list. |
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June 15, 2015 | RHP Mark Leiter assigned to Reading Fightin Phils from Clearwater Threshers. |
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March 17, 2015 | RHP Mark Leiter assigned to Philadelphia Phillies. |
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June 25, 2014 | RHP Mark Leiter assigned to Clearwater Threshers from Lakewood BlueClaws. |
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March 15, 2014 | RHP Mark Leiter assigned to Philadelphia Phillies. |
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August 19, 2013 | Lakewood BlueClaws activated RHP Mark Leiter from the temporarily inactive list. |
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August 17, 2013 | RHP Mark Leiter assigned to Lakewood BlueClaws from GCL Phillies. |
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August 14, 2013 | Mark Leiter assigned to GCL Phillies from Clearwater Threshers. |
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August 13, 2013 | Mark Leiter assigned to Clearwater Threshers from GCL Phillies. |
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July 8, 2013 | Mark Leiter assigned to GCL Phillies from Clearwater Threshers. |
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July 5, 2013 | Mark Leiter assigned to Clearwater Threshers from GCL Phillies. |
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June 21, 2013 | Mark Leiter assigned to GCL Phillies. |
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June 12, 2013 | Philadelphia Phillies signed RHP Mark Leiter. |
Mark Leiter Jr. Awards and Honors
Mark Leiter Jr. P

- Full Name: Mark Leiter
- Born: March 13, 1991
- Age: 28
- Birthplace: Fort Lauderdale, FL
- Bats: R
- Throws: R
- Height: 6' 0"
- Weight: 195
- Draft: Round 22 (2013, PHI)
- School: New Jersey Institute of Technology
- MLB Debut: 04/28/2017
Selected by Phillies in 22nd round of 2013 Draft out of New Jersey Institute of Technology...Led Phillies minor league system in SO in back-to-back seasons: 2014 (141) and 2015 (121)... 2015: Selected as a Florida State League midseason All-Star with Clearwater.