Baseball is back.

Pitchers and catchers reported to spring training on Thursday, with position players set to arrive in the next few days.

There will be some familiar faces showing up in different uniforms this year, with a number of them having to earn employment on non-guaranteed deals.

Here are 10 of the most interesting non-roster invites to keep an eye on this spring.

Felix Hernandez, SP, Orioles

It's been close to a year since King Felix stepped foot on a major-league mound after the 34-year-old opted out of the 2020 regular season. He's not the same pitcher of old, but the Orioles signed the 2010 American League Cy Young winner to a low-risk deal. The club will look for the right-hander to provide stability to an inexperienced rotation.

Brandon Morrow, RP, Dodgers

The A's will try to strike gold with Lowrie again after the 2018 All-Star struggled through two injury-plagued seasons with the Mets. The 36-year-old underwent knee surgery in October, but will look for another productive campaign with the A's in his third stint with the club. Lowrie owns a .271/.341/.413 slash line with 60 homers, 172 doubles, and 320 RBIs in green and gold.