Upon further review.

It will happen slowly, but eventually collegiate volleyball will follow the technological path of professional and other college sports and allow video challenges to confirm or overturn calls.

It made its debut in Thursday’s second match of the Outrigger Resorts Invitational when No. 14 Ohio State faced No. 10 Hawaii in a televised contest.

Buckeyes coach Pete Hanson hesitated when he made that first challenge. After all, there was no flag to be thrown on to the court as happens on NFL fields.

There is, however, a pingpong paddle — with one side red — which Hanson raised to alert the official that video verification was wanted on an Ohio State hitting attempt that was initially ruled out. It took longer than expected, but the replay shown on the officials’ monitor and the JumboTron agreed with Hanson and the Buckeyes won both the challenge and the point.

"Maybe this will start a movement and more schools will televise their matches," Hanson said. "You have a lot of women’s games on TV now and maybe this will help the men’s game.

"The ball moves so fast in the men’s game. You want the calls to be right and make it fair for the players on the court."

The hurdle will be money. In a sport that offers only 4.5 scholarships per team, very few men’s programs have the extra funds to buy the video equipment needed.

Hawaii is the exception, with most home matches — women’s and men’s — televised. Rainbow Warriors coach Charlie Wade said he had been wanting to institute it, following the lead of the FIVB — volleyball’s international governing body, which uses video challenges during World League and the World Championships.

"Their system is much more sophisticated, with like 8-10 cameras," Wade said. "I brought it up to our (national) meetings a couple of years ago and was told they’d never allow it until every school had the capability. But a lot has changed at the professional level and you see Major League Baseball getting on board.

"Everyone agrees that we have the tools to get it right. We want players and spectators leaving the arena with a sense that every call was the right one."

Thursday was the first time it was used in the U.S. and at the collegiate level.

"Pete Hanson goes down in history as the first to use it, the first to win a challenge and the first to be refused," Wade said, noting that Hanson’s second challenge was on a non-touch call at the net, which is not reviewable. "The coaches are all in. All the schools with men’s and women’s basketball are already providing monitors for the officials to review some things, so why not volleyball?

"I think it’s very progressive of Hawaii to do this," said UC Irvine coach David Kniffen, whose team plays the Rainbow Warriors for the tournament championship Sunday. "I think the technology is out there to sustain it, maybe with unmanned cameras.

"It has huge potential to impact the game in a positive way."

While the challenge system will be retired after Sunday’s match, Hawaii will keep using the radar gun behind both end lines to measure speed of serves, which also is used internationally. Wade said they are looking into how to make better use of the data and make it more visible, perhaps adding the reading on the scoreboard and having a box in the TV screen, much like what is used by MLB telecasts to show pitch speed.

"I think this is a good start," said UH assistant coach Milan Zarkovic, who has coached internationally for more than a decade. "Being the pioneer, you can help adjust and make it better.

"This is a wonderful idea that can help educate fans and grow the sport."