By Nick Selbe The Yankees loaded up their pitching staff ahead of Tuesday’s trade deadline. Ahead of Tuesday’s trade deadline, the Yankees have made a big move to bolster their already-stout pitching staff. New York has reportedly acquired starting pitcher Frankie Montas and reliever Lou Trivino from the A’s, according to Jack Curry of YES Network. Oakland will receive four prospects in return: Ken Waldichuk, Luis Medina, JP Sears and Cooper Bowman. Montas, 29, has been a reliable and productive starter for the past two seasons. He’s 4–9 with a 3.18 ERA in 19 starts for Oakland this season, a …