Tough night for Mariners pitchers in 12-5 loss

Detroit Tigers' J.D. Martínez, right, is congratulated by teammate Anthony Gose after Martinez scored a one of two runs on a hit by Nick Castellanos in the sixth inning of a baseball game, against the Seattle Mariners Monday, July 6, 2015, in Seattle. Photo: Stephen Brashear, APSEATTLE (AP) — If they didn't already know it, Mayckol Guaipe and David Rollins are both well aware now how tough it is to pitch in the big leagues.

The rookie Seattle relievers allowed a combined seven runs in one-plus inning as the Detroit Tigers pounced on the bullpen for a 12-5 win Monday.

"It's going to be a tough night for them, as it is for the rest of us, but it's not an easy league," interim Mariners manager…