Complex sentence: After being honorably discharged from the Army, Howard began his professional tennis career, winning several Tennessee State Championships, the Southern Men's Championship, was named to the U.S. Junior Davis Cup squad, and competed at Wimbledon and the US Open.
Split into simpler sentences: After being honorably discharged from the Army, Howard began his professional tennis career, winning several Tennessee State Championships and the Southern Men's Championship. He was named to the U.S. Junior Davis Cup squad and competed at Wimbledon and the US Open.