The Yankees solidified their rotation and bullpen with two deals on Monday. They traded four prospects to Oakland for two pitchers, including Frankie Montas:

The A’s sent Montas and right-handed reliever Lou Trivino to the New York Yankees in exchange for four prospects in what’s expected to be one of the biggest trades of the summer, sources confirm to this news organization. The A’s acquired pitching prospect JP Sears, left-handed pitching prospect Ken Waldichuk, infield prospect Cooper Bowman and right-handed pitching prospect Luis Medina.

MSN.com

Montas pitched well so far this season, owning a 3.18 ERA. He lowered his walk and home run rate this year while leaving his strikeout rate at a high 9.4 per 9 IP. Trivino allowed a ton of runs this season, but his K rate is high, and the Yankees defense is pretty good.

On the Oakland side, Sears blew away the minor leagues and pitched well in his 22 MLB innings. Waldichuk is another high K pitcher who needs to work on his control. Bowman has not been impressive with the bat, while Medina, finally making it to AA, walks a ton of batters. Sears is the prize in this deal.

The second deal involved the Cubs and a reliever:

The New York Yankees are acquiring right-handed reliever Scott Effross from the Chicago Cubs, according to Jack Curry of YES Network. The Cubs will receive right-hander Hayden Wesneski in return, according to Ken Rosenthal. 

CBSSports.com

In his short MLB career Effross allowed a .223/.270/.321 slash line. Wesneski is a starter with a 3.52 minor league ERA but very good three true outcomes.

The Yankees get some insurance for the rotation and help fill the injury void in the bullpen. The Athletics and Cubs each get a pitcher who can help them long term.