Guillen drives in two in Royals' 3-2 victory over Tigers.

Kansas City Royals' Jose Guillen drives the ball into center for a two-run double in the third inning of a baseball game against the Detroit Tigers on Tuesday, May 13, 2008, in Kansas City, Mo. (AP Photo/Ed Zurga)

KANSAS CITY, Mo.—Jose Guillen drove in a pair of runs to help the Kansas City Royals rally to beat the Detroit Tigers 3-2 on Tuesday night.

With the game tied 2-2 in the eighth inning, Guillen doubled with two outs off Francisco Cruceta (0-1). Esteban German ran for Guillen. After Billy Butler walked, Mark Teahen had an infield single, but Edgar Renteria committed a throwing error on a backhanded flip to second base, allowing German to score an unearned run.

Leo Nunez (3-0), the third of four Kansas City pitchers picked up the victory. Joakim Soria worked a perfect ninth to earn his ninth save in as many opportunities. He has yet to give up an earned run.

Detroit left-hander Nate Robertson gave up a season-high 10 hits, but only two runs. He allowed at least one hit every inning except the seventh, but for the first time in eight starts did not walk a batter.

Guillen, who is 10-for-18 in a five-game hitting streak, doubled home David DeJesus and Mark Grudzielanek with two out in the third for the only runs Robertson would allow. Grudzielanek went 3-for-3 off Robertson and is now 8-for-9 in his career against the pitcher.

Zack Greinke held the Tigers to two runs. His ERA did go up to 1.93, which ranks second in the American League.

Greinke gave up a run in the first when Carlos Guillen's one-out double scored Placido Polanco.

Matt Joyce homered in the second for the only other run Greinke would permit.

The Tigers loaded the bases in the sixth, but Greinke struck Ivan Rodriguez, who had singled in his first two at-bats, on three pitches.

The last-place Tigers have lost eight of 10 and have dropped all four games to the Royals this season.