Grand Slam Miami promises to be an exciting event—thanks in large part to the challengers. They made a strong impression in Kingston, where they played the role of the "away team" and brought unexpected energy and results. Now, some of them are returning to test their skills again in Miami. Here are a few standout groups to watch:

Today, Grand Slam Track (GST) announced the signing of Gabby Thomas as a racer for the league's 2025 debut season. Gabby Thomas is the most recent addition for Grand Slam Track, which has been making headlines in recent weeks.