SAN DIEGO – Nate Landwehr aims to run right through David Onama. Landwehr (15-4 MMA, 2-2 UFC) faces Onama (10-1 MMA, 2-1 UFC) in Saturday’s UFC on ESPN 41 co-main event at Pechanga Arena in San Diego. The card airs on ESPN and streams on ESPN+. Onama boasts a 100 percent finishing rate, but Landwehr is confident that he takes him out. “He’s good,” Landwehr said Wednesday at UFC on ESPN 41 media day. “He’s big, he’s tall, he’s young, he’s fast – I feel like I’m going to smash his face in. We’re going to see real quick. We’ve…