ARLINGTON, Texas -- It's Friday and that means a look at the weekly stock report for the Texas Rangers. Who's trending up and who's been struggling? Let's take a look:

STOCK UP

Bullpen: The Rangers' relief corps as a whole has been getting it done. They went into the start of the four-game series with Minnesota Twins with 15 1/3 scoreless innings, the longest streak for the Rangers' bullpen since throwing 28 1/3 shutout innings May 1-10, 2008. That streak ended in the ninth inning Thursday at 18 innings.

Adrian Beltre: The third baseman's stock with his glove can't get any higher as he continues to make impressive plays, but his overall value is on the rise thanks to a tremendous Wednesday with the bat. Beltre hit three home runs and among all of the numbers from that game, the most interesting might be this: He joins Albert Pujols, George Brett, Reggie Jackson and Babe Ruth as the only players with three-homer games in the regular season and the postseason. Beltre also did it in Game 4 of the 2011 ALDS in Tampa Bay.

David Murphy: He seems to play his best late in the season and is once again in a timely hot streak. He is hitting .387 in August, which was the second-highest average in the AL going into Thursday's game. He had a four-game hitting streak, where he was 9-for-14 (.643) with three doubles, a homer and five RBIs, come to an end Thursday.

STOCK DOWN

Craig Gentry: He has started just four of the team's last 24 games and is 2-for-23 in his last 18 games (since July 27). ... Still, he's hitting .310 on the season in 197 at-bats.

Quads: Yu Darvish was the latest Ranger to be impacted by a quad muscle. He missed his scheduled start Thursday because of a tight right quad and will pitch Tuesday. Catcher Mike Napoli's sore left quad has him on the disabled list. He's hoping to get out for a rehab assignment soon.

Mike Olt: He was 0-for-4 on Thursday and is hitting .182 now. He hasn't had regular playing time, making it tough to get in a rhythm. He also had an error in RF in Toronto as he tries to learn the position.