Mariners, Pirates vying for Aroldis Chapman amid notable trade history

The Seattle Mariners and Pittsburgh Pirates are reportedly in competition to trade for Boston Red Sox closer Aroldis Chapman this summer. With a history of teams winning the World Series after acquiring Chapman midseason, both franchises are keen to leverage this trend. Chapman, age 38, has posted a remarkable 0.44 ERA in 21 appearances this season while successfully converting all 14 save opportunities. The Mariners and Pirates hope to strengthen their rosters as the season progresses. Negotiations with the Red Sox are expected to ramp up soon as both teams seek to enhance their chances for a postseason run.

• 1:41 PMYahoo Sports — Mariners battling Pirates to trade for Aroldis Chapman is even more important because of this crazy omen