Walt Weiss has played in hundreds of spring training games. He attended one last year with part of his Regis High School team. Saturday will be different. It will be the first time he walks onto the field as the Rockies manager. "There's anticipation, sure. It will be special," said Weiss, who is likely to save a lineup card from the opener against the Diamondbacks at Salt River Fields. "I am looking forward to it." Weiss has been consistent in his message this month to his players. Be aggressive. "Regardless of what sport you play, it's hard to be successful at the elite level without being aggressive," said Weiss following Friday's scrimmage. "It's a mindset we need to have. We have to take advantage of our home field, and win around 50 games there for us to have a chance to win the division." Left-hander Drew Pomeranz will start opposite Arizona's Tyler Skaggs in a game that was nearly sold out as of Friday afternoon. The Rockies' lineup features several regulars: CF Dexter Fowler, 2B Josh Rutledge, LF Carlos Gonzalez, SS Troy Tulowitzki, 1B Michael Cuddyer, C Wilin Rosario, RF Tyler Colvin, DH Jordan Pacheco, 3B Chris Nelson.