Spartanburg is returning to the DecoTurf High School Tennis team championships with back-to-back national titles, a new lineup, and a ton of confidence.

The Vikings will depart Thursday afternoon for the tournament in Chattanooga, Tenn., with hopes of bringing back a third straight championship.

To do so, some new players will have to step up for the Vikings. Four starters are gone from last year’s state championship squad. But these Vikings are battle-tested, with 93 straight regular-season and playoff victories and plenty of tournament experience.

“We lost four starters who had been with us since the seventh grade, pretty much,” Spartanburg coach Todd Seagle said. “But the group that’s here now is just as confident as that group was. I tried to get them into as many matches as I could last year along the way, and they’re all tournament players. They might not have that DecoTurf experience, but they do have USTA experience. This is nothing new for them. They’re pretty much used to this week in and week out.”

The tournament features teams from 16 states in a flighted format. Spartanburg is the No. 2 seed in the tournament’s “A” Flight, a draw featuring No. 1 seed Hinsdale Central from Chicago as well as teams from Georgia, California, Florida, Kentucky and Missouri.

“There’s a ratings system, called the Universal Tennis Rating,” Seagle said. “ Players are given a number based on their tournament play, your top six players’ ratings are put together, and the top eight are the first flight.”

Seagle said the Vikings are strong at the top of the lineup as No. 1 player Bryce Keim returns from last season. They’re also stepping up in the middle of the lineup.

“A lot of times our challenge matches are more entertaining that some of our regular matches,” he said. “It’s good for these guys to get out and compete at a high level.”

Seagle said that he’d like to see the Vikings improve their doubles play during the tournament.

“We have to get better there,” he said. “South Carolina doesn’t emphasize doubles in the 5-2 format. Most states play a 6-3. Our guys don’t have as much experience, so we’re looking at different combinations. A lot of them take lessons with Cornelius Jordan at the Country Club of Spartanburg, so I’ve talked to him to try to get some ideas. We can get a little better there, I think. I’m always pretty confident in singles.”

Spartanburg will begin play against St. Xavier from Louisville, Ky., in Friday’s first round. The tournament will continue throughout the weekend.