Yonder Alonso

Mariners acquire Alonso in trade with Athletics

The Seattle Mariners acquired All-Star first baseman Yonder Alonso from the Oakland Athletics on Sunday for minor league outfielder Boog Powell.

The Mariners, who have not been in the postseason since 2001, entered their doubleheader at Kansas City trailing the Royals by 1½ games for the second wild-card spot.

Alonso, 30, is hitting .266 with 17 doubles, 22 home runs and 49 RBIs. He ranks second among American League first baseman with a .527 slugging percentage.

"I feel like it's a compliment he brings to our lineup, particularly the left-handed bat and how he pairs with (Danny) Valencia, which they've done before," Mariners general manager Jerry...