After compiling an 8–1 record in the Triple-A Pacific Coast League over the first three months of 1966, he was summoned to Philadelphia to work out of the bullpen.

Verbanic appeared in 17 games, all in relief, split two decisions, and posted an earned run average (ERA) of 5.14.

In a starting role on September 10, he threw his second and last career complete-game shutout, blanking the Chicago White Sox on five hits, again at Yankee Stadium.

[2] Verbanic was able to return to the Yankees in early 1970, and notched his final MLB win in relief over the Baltimore Orioles on April 19.

Verbanic rejoined the Phillies' organization in his final pro season, 1972, pitching for Triple-A Eugene, and later settled in that Oregon city.