COMMACK, N.Y. — Stefan Edberg held off Jimmy Connors in three sets, and Ivan Lendl rallied past Omar Camporese, as the top two seeds advanced to the semifinals of the Hamlet Challenge Cup yesterday.

For many modern-day greats of men’s tennis, including the likes of Roger Federer and Andy Murray, two of the finest players to have ever played the sport are Stefan Edberg and Ivan Lendl. From the mid ...