Toh, a 2020 Mountain West Championship runner-up in the 100 butterfly, will join the Gamecocks in January 2022.
IM/breast specialist Annaliese Streeter from Club Wolverine has announced she will be swimming for the Gamecocks beginning in the 2021-22 school year.
Collins was the Illinois HS state runner-up in the 100 fly and finished fourth in the 200 IM last fall.
Host New Trier will aim to topple defending champs Neuqua Valley as only 3.5 points separates the teams after a record-breaking prelims.
New Trier has set themselves in a great position for the team title, yet will have 2018 champion Neuqua Valley, Oswego East and Metea Valley on their tails.