Corbin Burnes, the prized offseason signing of the Diamondbacks, will undergo Tommy John surgery this week, the team announced, the latest blow in a trying season for Arizona.

Burnes, who signed a six-year, $210 million contract with the D-backs in December, had a 2.66 ERA in 11 starts, with 63 strikeouts in his 64⅓ innings. The former Cy Young winner pitched seven innings against the Dodgers twice this season, blanking them in a win on May 10 in Arizona and losing on a Teoscar Hernández three-run home run on May 21 in Los Angeles.

Burnes will miss the rest of this season and likely most of 2026 as well after the surgery.

For the week, Arizona swept the Braves in Atlanta, including a wild Thursday series finale in which they overcame a six-run deficit in the ninth inning. But then the D-backs got swept in Cincinnati, and end the week under .500 in fourth place, well behind the Dodgers, Padres, and Giants.

It’s a far cry from in March and April, when we thought of Arizona as legitimate postseason contenders this season.

Divisional showdown

As far as divisional tilts go, the Padres visiting the Giants had just about all you could ask for. They played four one-run games, with the Padres winning the first two in 10 innings and the Giants taking the last two.

Runs were at a premium during the series, with each team scoring 11 runs over th four games. San Francisco’s 6-5 victory on Wednesday snapped a string of 16 consecutive games in which the Giants scored four or fewer runs.

San Francisco parlayed those last two wins into a series win at home over the Braves, and the Padres took two of three on the road against the Brewers, solidifying a three-team National League West ahead of a week when the Dodgers play both teams after a rough weekend in St. Louis.

Positive Rockies news

After hitting rock bottom last week by losing their 50th game before getting their 10th win, the Rockies made up for lost time this week by sweeping the Marlins in Miami, snapping a string of 22 consecutive series losses for Colorado dating back to last season.

I enjoyed these tweets over a couple of days:

Colorado followed up that high point by getting swept at home by the Mets, and even with the three wins for the week still are tied for the worst 65-game start in modern major league history at 12-53, tied with the 1901 Washington Senators and 1932 Red Sox.

Also this week, infielder Ryan Ritter made his major league debut on Friday, and as Samantha Bradfield at Purple Row pointed out, was the first Rockies player to have a triple as their first major league hit.

NL West standings

through June 8

Dodgers 39-27, – – –
Padres 37-27, 1 GB
Giants 38-28, 1 GB
D-backs 31-34, 7½ GB
Rockies, 12-53, 26½ GB

The week ahead

Dodgers: at Padres, vs. Giants
Padres: vs. Dodgers, at D-backs
Giants: at Rockies, at Dodgers
D-backs: vs. Mariners, vs. Padres
Rockies: vs. Giants, at Braves

The busiest interdivisional week so far this season includes four matchups between NL West teams, and only divisional games for the top three teams in the division.