Pittsburgh Pirates infielder/outfielder Konnor Griffin is among the Pirates' invites to big-league spring training this year, according to the team. Per MLB Pipeline, Griffin is considered the top prospect in baseball in 2026. The 19-year-old turned heads in his first year in the minors for the Bucs in 2025, hitting .333/.415/.527 with a .941 OPS, 21 home runs, 94 RBI, 117 runs, and 65 stolen bases in 122 combined games with Single-A Bradenton, High-A Greensboro, and Double-A Altoona. Depending on how he looks in spring training, Griffin has a real chance to be the first teenager to debut in the big leagues since Juan Soto in 2018. Griffin is expected to compete for the starting shortstop job this spring. Griffin is a premium all-around athlete with plus-plus speed, and he certainly has the looks of a future fantasy superstar, potentially as early as 2026.

The San Francisco Giants signed Venezuelan shortstop Luis Hernandez, the No. 1 overall prospect in the 2026 international class, for $5 million on Thursday, according to MLB.com's Jesse Borek. It's the second straight year that the Giants have signed the top international free agent. The 17-year-old has projectable tools that could eventually make him a 30/30 candidate because of his hit, power, and run tools. Hernandez is seen as an above-average runner who is extremely aggressive on the basepaths. He has a quick first step at shortstop, although his arm is merely average right now. At just 15 years old in the Venezuelan league, Hernandez hit .346 in 104 at-bats against much older competition. He should be able to stick at the 6 long-term, although he could be battling Josuar Gonzalez, last year's international signing, as the Giants' shortstop of the future.

The New York Mets have claimed shortstop Tsung-Che Cheng off waivers from the Tampa Bay Rays. He was claimed off waivers by the Rays on January 8 from the Pittsburgh Pirates. The Rays designated Cheng for assignment to free up a spot on their 40-man roster following a trade. He'll now head to New York after putting up a lackluster campaign in Triple-A Indianapolis last season. Cheng slashed .207/.305/.267 with one home run, 36 RBI, and 20 steals in 110 games in the minors in 2025. He figures to serve as organizational depth in the minors to begin the season.

The Miami Marlins have claimed right-handed pitcher Osvaldo Bido off waivers from the Tampa Bay Rays. Bido was claimed off waivers by the Rays in December from the Atlanta Braves. He was designated for assignment by Tampa Bay after they needed to open a 40-man roster spot following a trade. The Marlins have decided to pick up the 30-year-old, who is looking to bounce back after a rough 2025 campaign. Last season, Bido registered a 5.87 ERA, 1.60 WHIP, and 68/35 K/BB ratio across 26 games (10 starts) with the Athletics. Bido posted strong numbers with the A's during the 2024 season. This is a solid low-risk move for the Marlins to take a chance on Bido, who could be a decent swingman option for them in 2026.