| Saturday, May 3rd, 1873 |
| Princeton Tigers: Tommy Trafton goes 6-6 against the Providence Grays, with 1 HR, 4 RBI and 2 R. |
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| Monday, May 5th, 1873 |
| SP Brewster Dobbelaere of the Princeton Tigers honored: Wins the EL Player of the Week Award. |
| Hoboken Giants: Dawson Schissler pitches a 6-hit shutout against the New York Mutuals with 0 strikeouts and 0 BB allowed! |
| New York Mutuals: SP Robby Zamores was injured while pitching. The diagnosis is not yet known. |
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| Thursday, May 8th, 1873 |
| New Brunswick Hubs: Activated CF Monty Caputo from the disabled list. |
| New York Mutuals: Robby Zamores diagnosed with shoulder inflammation, will miss 4 months. |
| New York Mutuals: Placed SP Robby Zamores on the 60-day disabled list. |
| Philadelphia Centennials: Signed free agent C Dan Arcea to a minor league contract. |
| Princeton Tigers: Brewster Dobbelaere pitches a 2-hit shutout against the New Haven Elm Citys with 0 strikeouts and 0 BB allowed! |
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| Friday, May 9th, 1873 |
| New York Mutuals: Tobías Gadea goes 5-6 against the Medford Mustangs, with 4 RBI and 2 R. |
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| Saturday, May 10th, 1873 |
| New Brunswick Hubs: MR Giovanni Valance was injured while pitching. The Diagnosis: sore shoulder. He's expected to miss about 6 days. |
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| Sunday, May 11th, 1873 |
| New Brunswick Hubs: Placed MR Giovanni Valance on the 7-day disabled list, retroactive to 05/10/1873. |
| New York Mutuals: CF Pyg Durrie was injured on a defensive play. The diagnosis is not yet known. |
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| Monday, May 12th, 1873 |
| SP Brewster Dobbelaere of the Princeton Tigers honored: Wins the EL Player of the Week Award. |
| New York Mutuals: Pyg Durrie diagnosed with a broken kneecap, will miss 6-7 months. |
| New York Mutuals: Placed CF Pyg Durrie on the 60-day disabled list. |
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| Thursday, May 15th, 1873 |
| Princeton Tigers: RF Victor Burgueno was injured while running the bases. The Diagnosis: mild calf strain. This is a day-to-day injury expected to last 2 days. |
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| Saturday, May 17th, 1873 |
| New Brunswick Hubs: Activated MR Giovanni Valance from the disabled list. |
| Princeton Tigers: MR Steve Mansch was injured after being bit by a poisonous snake. The Diagnosis: undisclosed injury. He's expected to miss about 2 weeks. |
| Princeton Tigers: Placed MR Steve Mansch on the 7-day disabled list. |
| Princeton Tigers: SP Brewster Dobbelaere was injured while pitching. The Diagnosis: finger blister. This is a day-to-day injury expected to last 2 days. |
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| Monday, May 19th, 1873 |
| SP Merrit Masiero of the New Haven Elm Citys honored: Wins the EL Player of the Week Award. |
| Philadelphia Centennials: Estefan Clemente goes 5-5 against the Medford Mustangs, with 0 RBI and 2 R. |
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| Tuesday, May 20th, 1873 |
| Amherst Minutemen: Activated 2B Bucky Palmier from the disabled list. |
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| Wednesday, May 21st, 1873 |
| Princeton Tigers: Alden Deiley goes 5-6 against the Medford Mustangs, with 1 RBI and 3 R. |
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| Saturday, May 24th, 1873 |
| Medford Mustangs: Activated RF Rodney Morisco from the disabled list. |
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| Monday, May 26th, 1873 |
| 2B Elliot Highlen of the New York Mutuals honored: Wins the EL Player of the Week Award. |
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| Tuesday, May 27th, 1873 |
| The Medford Mustangs have announced that they set their team focus from 'Win Now' to 'Neutral' |
| The Amherst Minutemen have announced that they set their team focus from 'Win Now' to 'Neutral' |
| Providence Grays: RF Sonny Stahn was injured while throwing the ball. The Diagnosis: back spasms. This is a day-to-day injury expected to last 1 day. |
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| Wednesday, May 28th, 1873 |
| The Providence Grays traded 34-year-old center fielder Dayton Hegenauer to the Medford Mustangs, getting 34-year-old left fielder Paddy Omundson and 20-year-old reliever Danilo Valdiva in return. |
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| Saturday, May 31st, 1873 |
| Princeton Tigers: Activated MR Steve Mansch from the disabled list. |
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| Sunday, June 1st, 1873 |
| RF Victor Burgueno of the Princeton Tigers honored: Wins the EL Batter of the Month Award. |
| SP Merrit Masiero of the New Haven Elm Citys honored: Wins the EL Pitcher of the Month Award. |
| C Ephraim Lorenzen of the New Haven Elm Citys honored: Wins the EL Rookie of the Month Award. |