— NBC Sports Chicago (@NBCSChicago) August 9, 2017
Chicago Cubs Willson Contreras exited early Wednesday with what looks like a hamstring injury. Typically a Grade 1 is about a week. Grade 2 is 2-4 weeks. Rest, anti-inflammatories, and therapy are required. Hamstring strains tend to recur. Rehab includes modalities to improve blood flow and healing, eccentric strengthening to prevent further pulls (which typically occur during the swinging/elongation phase), and stretching to improve general flexibility/tightness.