McGreevy is throwing far cleaner than Kelly, yet the market treats both offenses as equal.
The de-vigged implied totals sit even at 4.5 apiece, which undersells the gap between a 3.01 and a 5.38 ERA starter. St. Louis at -104 is essentially a free look given the pitching mismatch, so the value is on the road side. The total of 9.0 sits close to fair with two high-strikeout offenses in play.
McGreevy is the sturdier arm here, pairing elite walk avoidance at 2.05 BB/9 with a tidy 1.10 WHIP, though his 5.87 K/9 means he pitches to contact. Kelly has been leaky, a 5.38 ERA and 9.95 H/9 showing hard contact plus a bloated 3.67 BB/9. The command and run-prevention edge belongs clearly to McGreevy.
Both lineups strike out heavily, STL ranking 27th and ARI 28th in whiffs, so neither offense projects as a reliable stack against quality command. Arizona's 28th-ranked power at 0.93 HR/game is a poor fit against a pitcher who limits hits, while St. Louis at least offers modest thump from Burleson and Walker against Kelly's hittable arsenal. Neither side is a premium matchup, but STL has the softer opposing arm to attack.
Indoor / climate-controlled stadium: weather is a non-factor.
Chase Field is under the dome and climate controlled, so weather is a non-factor for run scoring tonight.
Lean a light St. Louis stack against Kelly's 1.51 WHIP, with Nootbaar at $3400 (3.26x) and Burleson at $4200 the value anchors in a neutral dome.
Target Michael McGreevy as a stable arm given his 3.01 ERA against a low-power ARI lineup, and fade Merrill Kelly given his 5.38 ERA and walk issues.
Season series: STL 1 – ARI 2
Arizona leads the season series 2-1, so there is limited recent shared history to lean on.
TB @ BOS
LAD @ NYY
PIT @ CLE
TB @ BOS
CWS @ TOR
TEX @ ATL
MIA @ MIL
MIN @ CHC
BAL @ HOU
SD @ KC
CIN @ COL
DET @ LAA
WAS @ ATH
STL @ ARI
SF @ SEA