Kenley Jansen underwent heart surgery on Monday and posted a video on Twitter saying he is "doing good."

The Los Angeles Dodgers announced that Jansen underwent an ablation surgery -- his second in six years -- and that it "went as expected."

The closer should be ready for Opening Day.

The procedure had been anticipated ever since the recurrence of an irregular heartbeat prompted Jansen to be admitted into a Denver hospital on Aug. 9.

Right-hander Shohei Ohtani underwent Tommy John surgery Oct. 1 and hopes to be able to help the Angels at the plate next season. He probably won't take the mound again until 2020.

In an indication that he plans to continue both pitching and batting, Ohtani said having surgery made the most sense.

Dodgers closer Kenley Jansen will have heart surgery on Nov. 26, with recovery expected to take from two to eight weeks.

The surgery, to correct Jansen's irregular heartbeat, had been expected. Jansen had a similar procedure after the 2012 season.

He is expected to be recovered and ready in time for spring training.

Jose Altuve expects to be "120 percent" ready by the start of spring training after undergoing surgery to repair a patella avulsion fracture in his right knee in October.

Altuve injured his knee sliding into second base in July.

The Houston Astros used Marwin Gonzalez to fill in for Altuve at second base when he was limited to designated hitter in the American League Championship Series.

"I don't think there's a single team in MLB that doesn't like Marwin," Altuve said. "For me, he's the savior. You have a problem, you call Marwin. That's one of the reasons why it's going to be really hard to get him back because he's in such high demand right now."

The Astros opted not to extend a $17.9 million qualifying offer to Gonzalez, who is coveted on the free agent market.

Lance McCullers, Jr. underwent Tommy John surgery on Tuesday and will miss the 2019 season.

The right-hander went 10-6 with a 3.18 ERA this season for the Houston Astros.

McCullers was placed on the disabled list with elbow discomfort from Aug. 5 to Sept. 24 but returned during the final week of the season, making three scoreless appearances.