Los Angeles appeared to have Profar picked off on a throw to second as middle infielder Chris Taylor held the ball with Profar well off of second base. 3B Umpire Segal therefore knows a tag is coming and puts himself into position behind the base, in line to see third baseman Justin Turner's timely tag, an out call upheld via Replay Review.
Video as follows:
Alternate Link: U3 Segal moves into position to see and call Profar out on a tag play at third base (CCS)