This is not fun to watch. Giannis Antetokounmpo was just getting warmed up in the third period of the NBA Eastern Conference finals Tuesday night game-4 when coming down from contesting an alley-oop toss and getting tied up with Hawks player Clint Capela.

Antetokounmpo immediately fell to the floor and stayed down on the ground for several minutes -- with Bucks and Hawks players and coaches surrounding him -- before sitting up. He was helped to his feet by his brother and teammate, Thanasis, and walked gingerly off the court with his help. Television monitors showed Antetokounmpo walking back to the locker room without assistance, but he had a significant limp.

Without their star player, the Bucks were routed 110-88 as the Atlanta Hawks tied up the series at 2-2. The two-time MVP landed awkwardly on his left leg, his knee buckling.

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The Hawks, who were without star guard Trae Young, never trailed in the game. They outscored the Bucks in points in the paint, 46-44, after the Bucks had outscored them by an average of more than 20 in each of the first three games.

Antetokounmpo is scheduled to have imaging done on Wednesday.

ESPN 99.1 will have coverage of game-5 on Thursday beginning at 7:00 PM.

LOOK: 50 images of winning moments from sports history

Sometimes images are the best way to honor the figures we've lost. When tragedy swiftly reminds us that sports are far from the most consequential thing in life, we can still look back on an athlete's winning moment that felt larger than life, remaining grateful for their sacrifice on the court and bringing joy to millions.

Read on to explore the full collection of 50 images Stacker compiled showcasing various iconic winning moments in sports history. Covering achievements from a multitude of sports, these images represent stunning personal achievements, team championships, and athletic perseverance.