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White held his saddle with a Zipp Service Course SL (20) seatpost. Curtis White's 2019/20 Cannondale SuperX Cyclocross Bike. © Z. Schuster / Cyclocross Magazine

White held his saddle with a Zipp Service Course SL (20) carbon/alloy seatpost. Curtis White’s 2019/20 Cannondale SuperX Cyclocross Bike. © Z. Schuster / Cyclocross Magazine