TUCSON, Ariz. (AP) _ Seattle hitters had a great day, but the attention was on Arizona.

The Mariners' 12-3 victory over the Diamondbacks on Tuesday was overshadowed by Matt Williams' sidelining injury.

Williams fouled Frankie Rodriguez's pitch off his right foot in the second inning. X-rays showed he broke the second metatarsal. A break in the same bone sidelined him for 68 games in 1995.

Joe Oliver homered twice and Carlos Guillen hit a three-run shot off Arizona starter Armando Reynoso.

Oliver, batting nearly .500, hit a two-run, two-out homer in the second and a solo homer in the sixth, his third and fourth homers of the spring. Guillen's three-run home run came in Seattle's five-run fourth inning.

Four of the runs in the fourth were unearned after Reynoso couldn't handle a soft grounder in front of the mound off the bat of Rodriguez for what would have been the second out. After Mark McLemore flew out to center field, Guillen hit his three-run shot to right-center.

Reynoso, projected as the No. 4 starter in Arizona's rotation, allowed 10 runs _ six earned _ and 11 hits in 5 1-3 innings.

Rodriguez improved to 3-0 this spring in his first starting role. He allowed one run, Jay Bell's homer, on four hits in four innings.

The Mariners' Raul Ibanez hit his first homer of the spring off reliever Dan Plesac in the eighth.