Rockies shortstop Troy Tulowitzki -- initially expected to be out until the All-Star break or beyond with a quadriceps muscle tear -- has so far proved to be an especially quick healer as he returned to action in a rehabilitation start this week for the Single A Modesto Nuts.
Tulowitzki went 0-for-2 but drove in a run with a sacrifice fly at Visalia, according to The Modesto Bee.
It was Tulowitzki's first game since being injured on April 29. If Tulowitzki continues to move freely, without pain and with confidence, preliminary indications point to a return to Denver well before the end of the week, though the team may want to avoid rushing him as he had been struggling at the plate even before he was injured.
Tulowitzki was expected to continue traveling with the team for another start, with further evaluation to be taken from there.
Doctor X -- the 'Baseball Medic' -- is an anonymous U.S. government trauma specialist with a Duke University sports medicine background and more than 20 years experience in emergency medicine. From time to time he considers MLB rumors, events and news reports as they pertain to baseball players' injuries, illnesses and various other disabilities, both on the field and off.
MLB Rumors editor Greg Fieg is a former sports news editor and award-winning writer whose bylines have appeared on the wires of the Associated Press and in numerous publications, including San Antonio Express-News, San Antonio Light, Houston Chronicle and Philadelphia Bulletin. He formerly was posted in various positions on the U.S.-Mexican border with Freedom Newspapers, and was a regular, independent contributor to United Press International.