Coors Field does the heavy lifting on this one. The venue run factor sits around 1.25, and early-inning scoring is historically front-loaded when the total is set into double digits. A 12.5 number on the slate means the book is bracing for offense all night. The question is only where that first run shows up, and the first inning is the most common place.
Buehler is coming off a rough stretch of starts, and even in his sharper outings, he has allowed traffic in the opening frame. Sugano pitches to contact by design, and Coors turns contact into extra-base hits. Put the two together and the pathway to a first-inning run runs through either side.
Why The Run Shows Up Early
Top-of-order bats for San Diego have been aggressive against fastballs early in games, and Colorado's approach against non-sinkerballers has produced first-inning rallies at home more often than the road profile would suggest. At altitude the ball carries, breaking pitches flatten, and mistakes get punished immediately instead of after two outs.
The other piece is the workload effect. Both starters are still working through their spring arm conditioning at Coors, which is one of the harder pitching environments in baseball. Sharpness is not at its peak in the first frame, and that tends to compound the venue tilt.
Risk To Respect
The most common YRFI fade is the rare Coors pitching gem. It does happen. If Buehler and Sugano both find early command, a Coors game can get through the first inning intact before the offense kicks in later.
The other risk is a quick top of the first. A three-up-three-down by Buehler against a cold Rockies lineup would put the full weight of the bet on Sugano facing San Diego's top of the order. That is still a favorable read, but it is an all-or-nothing outcome rather than the balanced attack the full inning usually produces.
Final Verdict
Padres at Rockies YRFI is the cleanest structural first-inning spot on the April 22 card. A 12.5 total, Coors Field, and two starters without a true first-inning shutdown profile is the exact combination that makes YRFI at -114 a release rather than a pass.