SCOTTSDALE, Ariz. -- Give Barry Bonds bonus points for variety.

Thursday, Bonds homered on a searing line drive that left Surprise Stadium immediately. In Friday's second inning, Bonds homered again, except this time he hit a towering fly that initially appeared to be a medium-deep out. Except it didn't die until it plopped onto the grass behind the right-center-field fence.

Bonds' fourth Cactus League homer lifted his exhibition average to .348 (8-for-23). He won't travel to Tucson, Ariz., on Saturday for the Giants' rematch against Colorado, but he'll likely play Sunday against Kansas City.

Manager Bruce Bochy wasn't fooled. He knew that Bonds' drive would clear the barrier. After all, Bonds' 85 homers against San Diego, which Bochy managed for the previous 12 seasons, is his highest total against any team.

"Yeah, I did. I've seen enough of them," Bochy said. "When his ball's gonna go out, it just keeps carrying. That's how strong he is. He backspinned that one pretty good."

Young pitching: Matt Cain and Tim Lincecum, who embody much of the Giants' hope for the future, struggled in Friday's 11-7 victory over Colorado. However, neither felt overly concerned.

Cain allowed four runs (two earned) and five hits in four innings. His ERA actually fell from 11.42 to 9.24. He threw 73 pitches, an allotment that should have taken him through five innings, but he fell short of that.

Cain, San Francisco's projected No. 2 starter, likely will make three more exhibition appearances before the regular season begins.

"It's still early," Cain said. "It's weird to say that, but you're still getting in the zone. I felt like I threw a lot of quality strikes, but when I got ahead of guys, I gave up too many opportunities to put the ball in play."

Case in point: Cain forged ahead of Colorado leadoff batter Willy Taveras 0-2 before hitting him. Cain later yielded a run-scoring hit to Jeff Baker after going ahead 0-2. That's what Cain meant when he said he threw "too many good strikes."

Lincecum blanked Colorado in the sixth inning before allowing Baker's two-run homer, an opposite-field drive to right, in the seventh. Lincecum took solace in retiring the next two hitters, Alexis Gomez and Yorvit Torrealba, to end the inning.

"I was kind of upset about that pitch, but I felt I came back from that," Lincecum said. "If you dwell on it, those are going to turn into even bigger innings."

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Bochy said that Lincecum probably will receive another start or multiple-inning stint Wednesday. If he doesn't pitch that day in the Giants' exhibition against the Chicago White Sox at Tucson, he'll face Minor League competition.

Roberts scratched: Center fielder Dave Roberts was scratched from Friday's lineup with what he described as a "tender ligament" between his chest and collarbone. Roberts downplayed the injury, which he said occurred while swinging Thursday against Kansas City, by saying that he would have played if it were the regular season. He's tentatively scheduled to play Saturday against Colorado.

In another injury-related matter, left-hander Jack Taschner said he felt fine after testing his bruised left ankle by throwing off a bullpen mound. Taschner was hurt Tuesday when a shard of Hiram Bocachica's bat struck him in the ankle.

Coming up: Since Matt Morris is scheduled to remain in Scottsdale to pitch a Minor League game, long relief/spot-starting candidate Brad Hennessey will start instead Saturday against the Colorado Rockies in Tucson. Hennessey, a subject of trade rumors, is 1-0 with a 6.75 ERA. He'll oppose Rockies right-hander Aaron Cook.