24. Jeff Francis (Rockies Career WAR 10.4)
Jeff and the previous player on this list are tied for 10th all-time in Rockies Career Pitcher WAR. He was also the Ace on the 2007 World-Series team.
That was also his best season when he won 17 games, struck-out 165 with a 4.22 ERA in 215.1 IP for an ERA+ of 114 and WAR of 3.9 finishing 9th in Cy-Young voting.
He never really materialized into that true “ace” but was a solid presence at the top of the rotation for some really young teams that his veteran and battle-tested presence was an invaluable asset.