The Arizona Diamondbacks signed Madison Bumgarner to a five-year, $85 million contract in December. Less than a week before Bumgarner agreed to continue his career in the desert, the Giants signed Kevin Gausman to a one-year, $9 million contract.

The two pitchers had much different results Sunday, with the one making $76 million less having a lot better day.

Bumgarner continued a troubling trend when he toed the rubber at PetCo Park. The longtime Giants ace got absolutely shelled by the San Diego Padres, allowing six earned runs and recording just six outs. With his fastball never coming close to 90 mph, Bumgarner allowed four home runs in two innings.

Through four starts in his D-backs career, there is something seriously off with Bumgarner.

Bumgarner topped out at 87.7 mph with his four-seam fastball against the Padres. Last season with the Giants, his average fastball speed was 91.4 mph. That big of a dip might be more than just mechanics for the veteran left-hander.

After the D-backs' 9-5 loss to the Padres, Arizona manager Tory Lovullo told reporters that Bumgarner left Sunday's game with back spasms, and the pitcher will return to Phoenix to be examined by the team's doctors.

The D-backs have to hope Bumgarner can recover quickly and return to his previous form. At the same time, the Giants have to be happy with Gausman's game against the Dodgers.

Gausman, 29, allowed just one earned run on three hits over 6 1/3 innings. He became the first Giants pitcher to throw a quality start this season, and had six strikeouts on the day. While Bumgarner was getting crushed, Gausman was firing 99-mph pitches like this: 

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Twice on the day, Gausman's fastball was registered at over 99 mph. He averaged 97 on his fastball, and his slowest one was 94.9 mph, according to Baseball Savant.

The Gausman contract continues to look like a steal for the Giants, while Bumgarner was on the wrong side of personal history in yet another rough outing early in his D-backs career.

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