Crossword Puzzle Pitch well?

Clue: Pitch well?

Braves' pitcher of yore (SAIN with 4 letters)
Wells Fargo, T.W.A., etc. (PRIVATECARRIERS with 15 letters)
Bottom-of-the-ninth pitcher (CLOSER with 6 letters)
Pitch a horseshoe anew (RETOSS with 6 letters)
Relief pitcher McGraw (TUG with 3 letters)
Automobile pitched by Groucho Marx on "You Bet Your Life" (DESOTO with 6 letters)
Still life pitcher (EWER with 4 letters)
Breaking pitch (SLIDER with 6 letters)
Relief pitchers, so to speak (FIREMEN with 7 letters)
What many pitched baseballs do? (MISSTHEBAT with 10 letters)