Second seeded, Grigor Dimitrov and fifth seeded Alex Bogomolov marched into the opening round of the Hall of Fame Tennis Championships on Monday.

Dimitrov beat Brian Dabul, a semi-finalist in Newport last year, 6-2, 6-4, and Bogomolov worked out baseline rallies against Mischa Zverev, 4-6, 6-3, 6-1. Sixth seeded Olivier Rochus, a finalist on Newport's grass courts last year, also advanced, defeating Greg Jones 6-4, 3-6, 6-3.

First seeded, John Isner is expected to play on Tuesday. The 20 year old Dimitrov, ranked at number 60 entering the week, is the second youngest player in the top 100 on the ATP tour.

"The beginning was real soft, then I thought I've got to improvise, I decided to mix up the game.” Bogomolov enters the week ranked 66th and Rochus is 74th.

Rochus also was a semi-finalist in Newport in 2009 and made the quarterfinals in 2008. He's glad to be back.

Rochus said, "It could have gone either way. It's very nice. I really like this tournament. I came to Newport just for this."

Isner entered in place of defending Champion and eighth seeded, Mardy Fish who withdrew when he was added to the United States Davis Cup team.

In other first-round play, Donald Young beat Paul Capdeville 6-2, 6-1, Matthias Bachinger defeated Dustin Brown 7-6 (7), 6-7 (5), 6-1 and Ruben Bemelmans stunned Denis Gremelmayr 6-4, 6-2.