Merrill Kelly fires shutout as Diamondbacks split doubleheader in San Francisco, Nootbar’s grand slam lifts them

Merrill Kelly turned in the kind of August reset the Diamondbacks have been looking for, pitching seven innings of shutout, two-hit baseball in the opener of a day-night doubleheader in San Francisco. Arizona ultimately split the doubleheader, but the result still mattered, with the Diamondbacks taking a half-game lead over the Padres entering the next stretch of the season.

Kelly’s outing arrived after a difficult stretch in August, and the veteran right-hander made the adjustment that day-night doubleheaders often demand. By limiting San Francisco to two hits through the first seven innings, Kelly did more than stop the bleeding, he gave Arizona a platform to control the pace of the game and keep leverage late in a contest where one swing can change the evening.

The offensive moment that separated Arizona in the first game came off the bench. Lars Nootbar entered in the seventh as a pinch-hitter and then delivered with a grand slam, a swing that turned timely contact into a decisive cushion. It was the sort of middle-to-late inning impact that tends to travel well in September, when managers lean on every at-bat that can flip a tight contest into a manageable one.

That pinch-hit grand slam capped a win that matched Kelly’s pitching arc: quiet early execution, then a burst of run production at the right time. Arizona’s ability to generate that scoring without surrendering control also helped explain why the shutout lasted long enough for Kelly to complete his seven innings.

The Diamondbacks’ evening did not end as a sweep. After taking the opener, they split the doubleheader, leaving Arizona’s lead picture intact rather than expanded. Even so, splitting sets on the road can be a meaningful outcome in the final weeks, particularly when the margin between contenders and the pack is measured in fractions of standings.

For San Francisco, the loss underscored how quickly a strong pitching plan can be undone when a team finds a high-leverage swing. For Arizona, the win provided a confidence boost that extends beyond the final line, because it came from two predictable pillars: a starter who kept hitters off-balance and a role player who made an impact exactly when the game reached the seventh inning.

What to watch next is whether Arizona can carry the momentum of this pitching performance into the second half of its calendar, especially after a doubleheader split. If Kelly’s command continues to look like it did in the opener, the Diamondbacks will have a clearer path to protecting their lead while the playoff race compresses toward its final decisions.