Memorial Day is all about honoring those who made the ultimate sacrifice for our freedom, and pro athletes have been part of that mix since World War I. Here's a look at some of the more notable athletes who lost their lives in service:

In addition to former Giants infielder Elmer Gedeon (featured in slide No. 8 above), there was one other MLB player killed in World War II. Harry O'Neill appeared in one game as a catcher for the Philadelphia Athletics in 1939. O'Neill joined the Marines and was killed on Iwo Jima in 1945.

The Big Ten's football MVP in 1942, Wisconsin receiver Dave Schreiner, was a second-round pick by the Lions but joined the Marines and was killed in the Battle of Okinawa.

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