Giants vs Diamondbacks Prediction 29 August 2026
📡 Saturday in San Francisco kicks off with the first game of a split doubleheader. Arizona enters the matchup with a 72-64 record following a 10-6 victory on Friday, putting them just half a game behind the final wild-card spot. The Giants, with a 55-80 record, are playing out the remainder of the season without any playoff ambitions. The Diamondbacks are sending Merrill Kelly to the mound, while San Francisco has yet to announce their starting pitcher for the first game, even as Saturday's daylight approaches.
Head-to-Head
📊 Arizona have emerged victorious in eight of their last 10 games against San Francisco. The season series tells the story even better: the Diamondbacks have claimed nine out of 11 encounters. Heading into this weekend, they secured the first eight out of nine matchups before the Giants responded with a 6-1 win. However, on Friday, Arizona quickly regained the upper hand with a 10-6 victory. Yesterday, the team recorded 12 hits and three home runs.
Head-to-head statistics Giants - Diamondbacks

San Francisco Giants Team Overview
The Giants have delivered some impressive offensive performances in recent weeks, yet consistency remains elusive. On Friday, San Francisco put up six runs, scoring in each of the first four innings. However, their offense then fizzled out as Arizona's bullpen allowed just one unearned run and a single hit over five innings. The team has lost nine of their 11 season matchups against the Diamondbacks and now faces the challenge of managing their pitchers for two games in one day.
Match Results: San Francisco Giants

Arizona Diamondbacks Team Overview
Every win carries significant weight for Arizona right now. Following their 10-6 victory on Friday, they've closed the gap to just half a game behind San Diego in the race for the final wild card spot. Lars Nootbaar recorded three hits and kicked off the game with a leadoff home run, Corbin Carroll drove in three runs, and Tim Tawa also went deep. After a few quiet nights, the offense found its rhythm again just in time for the doubleheader.
Match Results: Arizona Diamondbacks
⚾ Starting Pitchers
Merrill Kelly takes the mound for Arizona with an 8-12 record and a 5.35 ERA. August has been tough for him: against Chicago, he allowed three earned runs over 5.2 innings; before that, Boston scored six over four innings, and Colorado also tallied six in five innings. However, there have been strong performances too, like giving up just one run over 5.2 innings against the Dodgers. Kelly doesn't automatically give the Diamondbacks an edge today, but his experience is particularly valuable in the first part of the doubleheader.
San Francisco has yet to announce their official starting pitcher for the first game at the time of this check. This is a significant factor: with two games in a day, the Giants' management will need to allocate innings and relievers across 18 potential innings. MLB still lists the first game's starter as TBD.
⭐ Editor's Pick
Kelly is currently far from his best form, which gives San Francisco a good chance in the first half of the game. However, the overall outlook is significantly better for the visitors. Arizona have won nine of their 11 matchups this season, are on the verge of a playoff spot, and just yesterday scored 10 runs on this field. The Giants have yet to officially announce their starter, which is particularly concerning for the first part of a doubleheader. The Diamondbacks already demonstrated on Friday that they can overpower San Francisco after the starting pitcher exits. We're backing an Arizona Diamondbacks victory.
