What is the Challengers Series field size? Men’s - 96 Women’s - 64 Related articles How will the second half of 2021 unfold and how will the Regional QS Rankings work? How many surfers from each region will qualify for the Challenger Series? How do CS surfers qualify for the CT? How many events will count towards 2021 Challenger Series qualification? What level of regional QS events will there be in 2021? Comments 0 comments Article is closed for comments.