EQUIPMENT January 20, 2021 The Nitro Riders Cup: Round 3 | Miyabi Onitsuka vs Griffin SiebertRound 3 of the first annual Nitro Snowboards Riders Cup Tournament. The Nitro Riders Cup: Round 2 | Miyabi Onitsuka vs Griffin Siebert! The challenge: “The Favorite Trick!” Miyabi and Griffin were sent the challenge on Jan 17, 2021 and…