PEORIA, Ariz. – It’s early yet – the Mariners still have three weeks before they break camp – but competition is beginning to crystallize for duty as the bullpen’s second left-hander.

Tyler Olson and David Rollins, once viewed as the two longest shots in the battle, have been lights out. Particularly Olson, who has retired all 15 batters faced in his five innings while striking out eight.

Veteran Rafael Perez has three straight clean outings since a shaky spring debut, but Lucas Luetge and Joe Saunders each likely need to put on a push to claim the spot.

“In about a week, you really start to find out about guys,” manager Lloyd McClendon said. “(They’ll pitch) back-to-back (games). They see more veteran hitters throughout the camp.

“Right now, it’s kind of hard to judge because guys are out after three or four innings.”

Even so, McClendon sought to provide Olson and Rollins, who are each trying to make the jump from Double-A, with legitimate tests by calling on them early in games – before opponents pull their regulars.

Rollins hasn’t quite matched Olson, but he has four scoreless one-inning outings while permitting just two hits and no walks and recording four strikeouts.

“They’ve faced pretty good hitters,” McClendon conceded. “With both of those kids, I’ve tried to throw them into the fire as much as I can. And they continue to impress.”

Only Luetge and Rollins are on the 40-man roster. The Mariners would have to make a corresponding space-clearing move to retain Olson, Perez or Saunders.

Mariners 10, Brewers 5

The facts: It was another sloppy finish Friday for the Mariners but, this time, they had a sufficient cushion in coasting past Milwaukee.

Chris Taylor had a triple and two singles in leading a 14-hit attack.

The Mariners blew a two-run lead Thursday in the ninth to Oakland, and saw a 1-1 tie turn into a 4-1 loss Wednesday when Colorado scored three runs in the ninth.

This time, they built leads of 7-0 and 10-1 before the Brewers scored two runs in the seventh and two more in the ninth.

Mariners starter J.A. Happ yielded just one hit, a disputed single, in three shutout innings after giving up two runs in two innings in his previous start against the Reds.

“I felt little better than last time, for sure,” Happ said. “I felt a little more sharp. Yeah, I was pleased with that.”

Play of the game: Jean Segura got greedy when his soft grounder to second turned into a single. (Taylor attempted a bare-handed grab and the ball tickled away.)

Segura tried for second as shortstop Brad Miller chased down the ball – and pitcher Carson Smith hustled from the mound to take the throw and apply the tag for an out.

A 6-1 out at second if you’re scoring.

“That’s a first,” Smith said. “I’ve never had one of those before.”

Plus: Dustin Ackley went 2 for 3 and is batting .462 (6-for-13).

Minus: Logan Morrison batted twice with the bases loaded and no outs. He grounded into a double play and struck out – but he delivered an RBI single in his third at-bat.

Job battles: The Miller/Taylor competition is getting interesting. Taylor is batting .421 after going 3 for 3, while Miller dropped to .400 after going 0 for 3 but had that sparkling defensive play…Reliever Danny Farquhar is probably safe in the bullpen, but he has given up four runs and eight hits in 4 2/3 innings after allowing a homer to