1. A player's age is calculated by subtracting his birth year from the season year. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
   
2. We note that some teams have changed their names over the years. So, when referring to a specific season, we use the team name that was current during that season. Hence, you might see a reference to the 77 Boston Bees teams when making a reference to 1936, even though the team had other names before and later, finally becoming the Boston Braves until moving to Milwaukee. Team data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
   

Mike Kilroy of the 1888 Baltimore Orioles threw right-handed, was debuting in the majors, played on a losing team, played in Oriole Park, and was born in Philadelphia.

• achievement score (-1.0 see References)
• assists (1)
• complete games (1)
• double plays (0)
• games finished (0)
• games played (1)
• games started (1)
• innings pitched (9.0)
• putouts (1)
• saves (0)
• shutouts (0)
• strikeouts (1)
• wins (0)
• balks (0)
• earned runs (8)
• errors (0)
• hit by pitch (0)
• hits (12)
• homers given up (1)
• losses (1)
• runs allowed (9)
• walks (5)
• wild pitches (0)
• age (19 yrs)
• batters faced (0)
• height (5'11")
• weight (180 lbs)

Sources