Ambidextrous means being able to use both hands equally well. In the given context, it suggests that Carlos was able to throw accurately with his left hand even though his right wrist was sprained. The context clues such as "sprained his right wrist" and "able to throw accurately with his left hand" indicate that ambidextrous refers to the ability to use both hands skillfully. Moreover, the word parts "ambi-" meaning both, and "dextrous" meaning right-handedness, further suggest that ambidextrous implies the ability to use both hands proficiently.
