Jack Sock vs Feliciano Lopez prediction

Jack Sock put as fave here, and I believe its because he was leading 3-1 on their H2H record and host player factor. In fact their latest 3 meeting always have 3 sets at the end, and today I fancy another 3 sets game here. It wont be easy for them to beat each other in straight set or at least it will be have tie a break there. Sock was not in his best shape and also Lopez, but as said earlier I will consider tight game here as the serve taker should be comfort collects his point. Over 23 here