Combs scored in the fifth minute, and Trey Janes scored five minutes later off a 40-yard pass from Walksler, who later closed the first-half scoring.
Combs also opened the scoring in the second half, and Thornbury closed it with his first career goal. David Hewitt and Mike Weckenbrock added assists.
At Wilmington, Ohio, the Centre women played to a 1-1 tie in overtime against Wilmington College, which was ranked in the Great Lakes region.
Centre (1-0-1) was outshot 28-11 by Wilmington, but got 17 saves from senior goalkeeper Jessica Chisley.
Wilmington scored first with an unassisted goal from Katie Foucht in the 13th minute. But it took Centre just 12 minutes to answer when freshman Kim Lacy scored her first career goal off an assist from Liz Hurst.
"Our entire team played with heart, they played with soul and they did what they needed to do," coach Gina Nicoletti said.
At Hanover, Ind., Centre went 2-2 to tie for third place in a Hanover tournament Friday and Saturday.
The Colonels opened with a 30-25, 30-26, 30-23 win over Ohio Wesleyan on Friday in which they had a .358 attacking percentage overall and seven kills and no errors in 26 attacks in game three.
"That is just an oustanding job by all of our attackers," coach Stephanie Dragan said.
Centre had 16 aces, eight in the third game. Leah Ballinger had a team-high 38 assists; Whitney Faust had 10 kills.
On Saturday, Centre lost to Spalding 22-30, 29-31, 30-16, 30-23, 15-11 in a 2 1/2 hour match. Ballinger had 47 assists and Kate Guthrie had 17 kills.
The Colonels rebounded to beat Hanover 30-19, 30-23, 29-31, 30-20. Guthrie had 14 kills and Ballinger had 20 assists in only two games.
Centre advanced to a semifinal match against Indiana-Southeast, which beat the Colonels 30-18, 30-21, 27-30, 30-21.
Kate Bennett had 15 kills, Lisa Fryman had 17 digs, Faust had nine blocks and Ballinger had 35 assists.
At Danville, Centre dropped a 1-0 decision to Wooster when Anlyn Addis scored with 6:57 left in the first overtime period Saturday.
Centre had only eight shots, while goalkeeper Liz Lowe was peppered by Wooster's shooters. She had 24 saves, including four in overtime.
"We really have to work on our defense and keeping the opposing teams from getting as many shots as we've been giving up and as many penalty corners as we've been giving up, and at the same time try to manufacture some more offense for ourselves," Centre coach Tom Hobbs said.
At Sewanee, Tenn., Centre's women finished third and the men were fourth in a meet at Sewanee.
Freshman Eileen Schilling was fifth overall for the women with a time of 19 minutes, 10 seconds on the 8-kilometer course.
"She's just a phenomenal runner, and she has a very, very successful career ahead of her," Centre coach Lisa Owens said.
The women were two points better than defending Southern Collegiate Athletic Conference champion Rhodes, which outpointed them by about 50 in the same meet a year ago.
The men, led by Colin Muehlenkamp's 15th-place finish, were four points behind Rhodes.