Over the next few weeks as the NCAA Tournament and Spring Training dominate the month of March, we have combined the two for our own March Madness, which will determine who the readers of RealGM will select in the second edition of our 'Be The GM' series. Though there are many different potential answers, the question is simple; If you were to start a MLB franchise from scratch and had the option to pick any player in the world, who would you pick? Click here for more information on this series and to read other match-ups. The Rockies and Diamondbacks squared off in the 2007 NLCS and while Troy Tultowitzki's club won that battle, Arizona has a ton of young talent to compete indefinitely. Troy Tulowitzki, SS, Colorado Rockies Other players considered from the Rockies: Ubaldo Jimenez, Garrett Atkins Why he's a franchise player: Tulowitzki was second in ROY voting in 2007 while helping lead the Rockies to their first World Series in franchise history. He hit .291/.359/.479 with 24 homers while playing an excellent defensive shortstop that season. For his follow-up, Tulowitzki battled injuries and was limited to just 101 games. We'll see what kind of team the Rockies can build around the Long Beach State product, but he has a lot of the intangible qualities of a Derek Jeter and is an ideal building block. He should annually have an OPS of .850 or better while playing Gold Glove defense at a demanding position. Brandon Webb, RHP, Arizona Diamondbacks Other players considered from the D-Backs: Justin Upton, Dan Haren, Stephen Drew Why he's a franchise player: Webb won the 2006 NL Cy Young, came in second in 2007 and 2008. His level of consistency both in health and quality since coming up in 2003 has been tremendous. He has pitched no fewer than 208 innings and has had kept his ERA no worste than 3.59 when he was still having problems preventing walks. Webb is fourth amongst active pitchers and 10th all-time in ERA+, while his unadjusted career ERA is 3.24. He has been equally effective both at home and on the road, with career ERAs of 3.23 and 3.24 respectively. Click here to cast your vote for Tulowitzki or Webb.