ManagersHalf: ManagersHalf table
In Lahman: Sean Lahman's Baseball Database

Split season data for managers

1	data(ManagersHalf)

A data frame with 93 observations on the following 10 variables.

playerID: Manager (player) ID code
yearID: Year
teamID: Team; a factor
lgID: League; a factor with levels AL NL
inseason: Managerial order. One if the individual managed the team the entire year. Otherwise denotes where the manager appeared in the managerial order (1 for first manager, 2 for second, etc.). A factor with levels 1 2 3 4 5
half: First or second half of season
G: Games managed
W: Wins
L: Losses
rank: Team's position in standings for the half