Mets' Jared Young knocked out after taking knee to head in ‘terrifying’ collision
First baseman ran into teammate McLean in sixth inning

TL;DR
- Jared Young was injured in the sixth inning of a game against Philadelphia after colliding with teammate Nolan McLean.
- Young was struck on the head by McLean's knee and was unconscious before being carted off.
- A CT scan at a hospital was negative, and Young had full use of his extremities.
- Mets manager Andy Green described the collision as a 'terrifying moment' and a 'really scary collision'.
- Young is experiencing concussion symptoms.
- McLean was shaken by the incident but remained in the game initially.
- Young, a first-full-big-league-season player, is a regular at first base and has hit .266 with nine homers and 39 RBIs.