Ankeny Centennial (Ankeny, Iowa), Naperville North (Naperville, Ill.) and St. Thomas Aquinas (Overland Park, Kan.) were the big winners in the final weekend of regional high school showcases for the spring 2016 season.

Centennial and St. Thomas Aquinas won the top brackets at the adidas Tournament of Champions in Burlington, Iowa, while Naperville North became a rare repeat winner at the Naperville Invitational.

Teams now settled into the stretch run of local and playoff matches between now and the end of the season.

Naperville North's victory allowed the team to vault to No. 1 in the Illinois state rankings and No. 2 in the Midwest region rankings this week. Centennial already was No. 1 in Iowa, but moves up in the Midwest region rankings. Likewise, St. Thomas Aquinas stays No. 3 in Kansas, but its region and national standing greatly improves following a 3-0 showing in Iowa.

Around the nation last week:

* The top five teams in Georgia all won opening round playoff matches last week, and the first big playoff showdown takes place Tuesday as Dalton (Ga.) takes on Greenbrier (Ga.) in a battle of SIMA FAB 50 Top 10 teams. 

* Springdale (Ark.) and Creighton Prep (Omaha, Neb.) boys return to No. 1 in their respective state rankings this week. 

* Dimond (Anchorage, Alaska) inherits the state's girls No. 1 ranking after knocking off former No. 1 Service (Anchorage, Alaska) 3-0 last week. Other new state girls No. 1s this week are: Forest Hills Central (Grand Rapids, Mich.), Weddington (Matthews, N.C.) and Campbell County-Gillette (Gillette, Wyo.). 

See the entire SPRING high school region and state rankings:

SPRING REGION RANKINGS: BOYS (May 2) | GIRLS (May 2)

SPRING STATE RANKINGS: BOYS (May 2) | GIRLS (May 2)

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