A 42-year-old man is brought to the trauma center after fall from ladder. Physical exam shows a slightly deformed left lower extremity with a 0.5cms soft tissue defect over the anterolateral aspect of his leg. The wound appears relatively clean with no gross contaminants present. Radiographs depict a sho oblique proximal one-third diaphyseal tibia fracture. What is his Gustilo open fracture classification grade