The Dodgers lost two non-roster players in the seventh inning when lefty Erick Threets felt something in his shoulder and had to be removed from the game and infielder Doug Mientkiewicz, who is fighting for one of the last 25-man roster spots, hurt his quadriceps coming out of the batter’s box after hitting a ground ball to second base. Joe Torre said Threets was shaking when they went out to check on him, but initial tests didn’t show anything serious. Mientkiewicz is expected to miss at least a week just as spring training hits a critical juncture as far as evaluating those players hoping to make the team. … Russell Martin had a big game, going 2 for 4 with a single and a home run and two RBI. Clayton Kershaw had one of his best outings yet, going 3 2/3 and allowing two runs on four hits, although a questionable scoring decision would have resulted in one of those runs being unearned if Blake DeWitt had been charged with an error on a ball he botched in the third inning that was ruled a hit because it took a tough hop. … Juan Pierre had two hits, including a double, and stole two bases. He also drew a walk. … Mark Loretta had a big day, doing 2 for 3 with a single, double and walk. Delwyn Young had a home run. And Juan Castro finally cooled off, going 0 for 5 to drop his average to .444. … Dodgers improve to 10-6 counting the win over South Korea, and for purposes of this blog, I’m GOING to count it for the rest of the spring. Feel free to disagree. If you do, just subtract one from the win column.