Baseballwise (1900)

“The new manager will not take hold of the team till next season, as Manager Waite, who has given the city excellent sport baseball-wide for the past two years, will see the season through.” The Hartford Daily Courant, August 27, 1900, p11

Previous earliest use (Dickson Baseball Dictionary, 3rd edition, 2009):
An early use was recorded in the radio broadcast of the first game of the 1946 World Series (Oct. 6) when it was observed, “Baseballwise the day is perfect.”