One of the Giants' most promising prospects is going to miss some time. 

Outfielder Heliot Ramos sustained a mild left oblique strain Friday, the Giants announced Sunday. Ramos will undergo treatment this week before being re-evaluated by team doctors next weekend when a timetable for his return will be announced. 

The Giants drafted Ramos in the first round (No. 19 overall) of the 2017 MLB Draft, and the 20-year-old wasn't invited to big league camp this spring. Ramos played in San Francisco's split-squad game with the Colorado Rockies on Friday night, homering in the bottom of the sixth inning and impressing new manager Gabe Kapler. 

In that same game, Ramos strained his oblique on a throw to home plate. Bryce Johnson replaced Ramos in right field in the top of the seventh inning, just after the top prospect's home run. 

[RELATED: How Giants' roster could be impacted by contract options]

Ramos rose through the Giants farm system in 2019, beginning the year with the San Jose Giants and reaching the Double-A Richmond Flying Squirrels in his age-19 season. He was over five years younger than the weighted average of his peers, according to Baseball Reference, and Ramos slashed .242/.321/.421 in 106 Double-A plate appearances. 

The Puerto Rico native is a big part of the Giants' future, so San Francisco will take all the time needed to ensure Ramos starts the 2020 season healthy.