Take The Lead Meaning

(idiomatic) To assume leadership over a group.

Example:   At 0-0, United will take the lead if they score the penalty.
2010 December 29, Sam Sheringham, “Liverpool 0 - 1 Wolverhampton”[1], BBC:
  It was an omen of things to come as in the 56th minute the visitors took the lead after a mix-up between Skrtel and Sotirios Kyrgiakos allowed Ebanks-Blake's through-ball to squeeze between them.