Crossword Puzzle Widely used base

Clue: Widely used base

Paella base (RICE with 4 letters)
Former baseball manager comes to a President's mother (PETEROSEKENNEDY with 15 letters)
Figure on which royalties are based (NETSALES with 8 letters)
Kind of base or brat (ARMY with 4 letters)
Like a baseball pitch (OVERARM with 7 letters)
Los Angeles baseballer (DODGER with 6 letters)
NYC-based educator's org. (UFT with 3 letters)
Misplayed a baseball (ERRED with 5 letters)
Base lines (XAXES with 5 letters)
Base of a crocus stem (CORM with 4 letters)