With a wealth of talented swimmers in nearly every event, the St. Thomas Aquinas boys’ and girls’ teams won the Region 4-3A titles on Friday.

The Raiders had a top-four showing in all six relays, including wins in the boys’ 200 free and the girls’ 400 free.

St. Thomas, which trailed Palmetto early in the meet, needed a first-place finish in the 200-free relay to take a commanding lead at Central Park Pool in Plantation. It seemed Palmetto would narrowly edge Aquinas at the wall in the race, but a late surge by senior anchor RJ Moore proved to be the difference. With less than 10 yards left, Moore caught Palmetto senior Derek Chait to win the race.

“It was a team effort,” Moore said. “When it’s that close, I try to swim a faster time than usual.”

Individually for St. Thomas, senior Brandon Goldman won the 100 back and Jack Harrington won the diving competition with a score of 461.66.

Broward had a successful day. A number of county athletes had times that should be fast enough to advance to the state tournament.

Only the winner of each event automatically qualifies for the state final. After all regional events are done, the top 20 fastest times in each event advance.

Cypress Bay’s Emma Lincoln is guaranteed a spot in the 200 free. Lincoln won the race with an All-American consideration time of 1:51.26, a personal best.

Lincoln had a chance at winning a pair of regional titles, but lost by a tenth of a second in the 100 free to Palmetto’s Daniela Johnson.

“I knew I had to go out fast or I wouldn’t do that well,” she said. “I am really happy with my times.”

West Broward’s Marcella Marinheiro and Western diver Alexa Elkins also won an individual title. Marinheiro bested the field in the 100 back with a :58.62.

“I’ll keep training for states,” Marinheiro said. “I feel really happy with my time, but I’m going to train to go lower.”

•  Boys’ results — 1. St. Thomas 342.50, 2. Palmetto 327, 3. Nova 222, 4. Columbus 150, 5. Cypress Bay 133, 6. Reagan 117.50, 7. Ferguson 106, 8. Mourning 105: 200 medley relay: 1. Palmetto 1:38.87, 2. St. Thomas 1:39.26, 3. Nova 1:41.01, 4. Reagan 1:41.85. 200 free: 1. Derek Chait, PAL, 1:43.47, 2. Bradley Adan, COL, 3. Francisco Parra, CB, 1:44.16, 4. Juan Olano, SUN, 1:45.15. 200 IM: 1. Samuel Smiddy, PAL, 1:54.27, 2. Brandon Goldman, STA, 1:55.31, 3. Veronica Gruelach, MB, 2:14.49, 4. Skye Downey, SP, 2:16.29. 50 free: 1. Anthony Soto, CG, :21.73, 2. Facundo Betancor, MIA, :22.18, 3. RJ Moore, STA, :22.37, 3. Jose Gonzalez, REA, :22.37. 100 fly: 1. Bradley Adan, COL, :51.78, 2. Samuel Smiddy, PAL, :52.07, 3. Alex Lilley, STA, :52.77, 4. Robert Castano, COL, :52.86. 100 free: 1. Nicholas Coard, KROP, :47.27, 2. Francisco Parra, CB, :47.94, 3. Anthony Soto, CG, :47.96, 4. Alex Behnam, STA, :47.97. 500 free: 1. Derek Chait, PAL, 4:39.85, 2. Blake Manganiello, PAL, 4:42.38, 3. Luis Rivadeneria, FER, 4:44.41, 4. Kyle Desrosiers, STA, 4:47.99. 200 free relay: 1. St. Thomas 1:28.01, 2. Palmetto 1:28.30, 3. Nova 1:31.80, 4. Hialeah Gardens 1:31.91. 100 back: 1. Brandon Goldman, STA, :52.35, 2. Francisco Alvarez, WEST, :54.03, 3. Robert Castro, COL, :54.25, 4. Nicholas Coard, KROP, :54.56. 100 breast: 1. Juan Olano, SUN, :59.88, 2. Joseph Hunt, PAL, 1:00.88, 3. Alexander Reid, MB, 1:01.01, 4. Jose Gonzalez, REA, 1:01.36. 400 free relay: 1. St. Thomas 3:12.61, 2. Palmetto 3:15.13, 3. Nova 3:18.48, 4. Reagan 3:22.11.