St. Louis Cardinals vs Colorado Rockies Picks and Prediction for Sunday September 6 2026

The St. Louis Cardinals and Colorado Rockies close out their three-game series Sunday afternoon at Coors Field in Denver, Colorado. First pitch is scheduled for 3:10 PM ET with coverage on MLB.TV. St. Louis enters the matchup at 71-71 overall and 37-33 on the road, while Colorado is 54-87 overall and 29-40 at home. The Cardinals sit third in the NL Central, 17 games behind Milwaukee, while the Rockies are last in the NL West at 30 games back. St. Louis won Friday's series opener 7-6 and has won three of its last four completed games. ESPN Analytics gives the Cardinals a 58.4% chance of winning compared with 41.6% for Colorado. At the time of this writing the odds were not released. Before making your Sunday wagers, check out our free MLB picks for more baseball predictions and betting analysis.

Starting Pitchers

St. Louis is scheduled to start Kyle Leahy, who enters at 10-4 with a 3.13 ERA and 1.31 WHIP through 129.1 innings. Leahy has allowed 131 hits and 38 walks while striking out 118 and surrendering 13 home runs. Colorado counters with Tanner Gordon, who is 1-4 with a 5.18 ERA and 1.40 WHIP through 88.2 innings. Gordon has allowed 108 hits and 16 walks while recording 72 strikeouts and giving up 17 home runs. The starting-pitching matchup strongly favors St. Louis, with the Cardinals holding significant advantages in ERA, WHIP and home-run prevention.

St. Louis Has the Starting-Pitching Advantage

St. Louis enters Sunday at 71-71 overall and has actually been better away from home, posting a 37-33 road record. The Cardinals have won three of their last five completed games, including Friday's 7-6 victory at Colorado along with road victories of 8-6 and 13-8 against Los Angeles. St. Louis has scored at least seven runs in three of its last four wins, and the Cardinals enter this matchup with considerably more momentum than their .500 overall record might suggest.

The Cardinals are batting .242 with 1,158 hits, 640 runs and 151 home runs. St. Louis owns a .316 on-base percentage and .385 slugging percentage. Those offensive numbers actually trail Colorado in each of the major categories supplied, creating an unusual matchup in which the team with the substantially better overall record does not own the statistical offensive advantage. St. Louis has nevertheless been productive recently, scoring 34 runs over its last five completed games.

The major advantage for St. Louis comes on the pitching side. The Cardinals own a 4.25 team ERA and 1.35 WHIP while opponents are batting .254. None of those numbers are dominant, but they are substantially better than Colorado's corresponding marks. Sunday's starter provides an even larger advantage with a 3.13 ERA, and his 13 home runs allowed through 129.1 innings stand out in a matchup being played at Coors Field. If St. Louis can limit Colorado's opportunities, its pitching edge should be enough to overcome the difference in the offensive statistics.

Colorado's Offense Keeps the Rockies Dangerous

Colorado enters Sunday at 54-87 overall and 29-40 at Coors Field. The Rockies have split their last four completed games and are 2-3 over their last five after Friday's narrow 7-6 loss to St. Louis. Colorado previously earned consecutive victories over Baltimore, including a 6-5 extra-inning win, so the Rockies have been competitive recently despite owning one of the weakest overall records in the National League.

The Rockies are batting .253 with 1,214 hits, 661 runs and 156 home runs while posting a .324 on-base percentage and .417 slugging percentage. Colorado leads St. Louis in all five of those offensive categories, including an 11-point advantage in batting average and a 32-point edge in slugging percentage. The Rockies have also scored 21 more runs and hit five more home runs. That offensive production makes Colorado more dangerous than its 54-87 record alone would indicate.

Pitching remains the major weakness. Colorado owns a 5.43 team ERA and 1.51 WHIP while opponents are batting .286, considerably worse than St. Louis in all three categories. Sunday's scheduled starter also enters with a 5.18 ERA and has allowed 108 hits in only 88.2 innings. Colorado has enough offense to create problems, but asking its pitching staff to consistently contain opponents has been a much larger challenge. That imbalance is difficult to overlook against a St. Louis club that has recently produced several high-scoring performances.

St. Louis Cardinals vs Colorado Rockies Picks and Prediction

Pick: St. Louis Cardinals Moneyline

St. Louis is the preferred side for Sunday's series finale. Colorado owns the better offensive statistics supplied, but virtually every other meaningful factor favors the Cardinals. St. Louis has the better overall record, the better road record compared with Colorado's home mark, and a substantial advantage in team pitching. The biggest difference comes from Sunday's starting matchup, where the Cardinals send out a starter carrying a 3.13 ERA compared with Colorado's 5.18 mark. St. Louis also won Friday's opener and has taken three of its last four completed games. With ESPN Analytics giving the Cardinals a 58.4% win probability, St. Louis is the stronger moneyline play once a reasonable price becomes available.

Pick: Over 10.5

Over 10.5 is the preferred target number. The first completed game of this series produced 13 runs, and Colorado enters with a 5.43 team ERA, 1.51 WHIP and .286 opponent batting average. St. Louis has scored 34 runs over its last five games, while Colorado has scored 19 during the same span. The Rockies also own the better season-long batting average, on-base percentage and slugging percentage, giving them a reasonable opportunity to contribute despite the starting-pitching disadvantage. St. Louis should have scoring opportunities against Colorado's pitching, and the Rockies have enough offensive production to push this game toward another elevated total.

Final Picks: St. Louis Cardinals Moneyline and Over 10.5

This preview was completed before play on Saturday. Starting pitchers, betting lines and other game information are subject to change before the game begins.