Texas Rangers third baseman Adrian Beltre could miss the rest of the regular season due to a hamstring injury that will sideline him at least four weeks.The 38-year-old Beltre was injured while fielding a ball during Thursday's loss to the Houston Astros. An MRI exam conducted Friday showed that Beltre suffered a Grade 2 strain.The Rangers have 29 games remaining in the regular season entering Friday's contest against the Los Angeles Angels. Slugger Joey Gallo is starting Friday's game at third base.Beltre is batting .315 with 16 homers and 66 RBIs in 80 games.Texas recalled third baseman Will Middlebrooks from Triple-A Round Rock to help plug the hole at third base.--Michael Fulmer, Detroit's de facto pitching ace with the departure of Justin Verlander, will miss at least two starts with a recurrence of numbness in his pitching fingers.Fulmer, a right-hander, is scheduled to see Dr. James Andrews next week, ostensibly to determine whether surgery is needed to correct his ulnar nerve. Inflammation around the nerve placed Fulmer on the disabled list in August but tests showed no structural damage at that time.--The New York Yankees reinstated designated hitter Matt Holliday from the 10-day disabled list.A lower back strain sent Holliday to the disabled list on Aug. 6. He began a rehab assignment on Aug. 18 in Tampa and recently played for Triple-A Scranton/Wilkes-Barre.Holliday, 37, was first sidelined on June 28 with a viral infection. Since his return after the All-Star break, he hit just .136 (11-for-81) with one home run and two doubles.