Yale will officially announce its 34th head football coach tomorrow at a 4 p.m. press conference.

A source with knowledge of the search process said that Harvard assistant coach Tony Reno is expected to fill the vacancy left by Tom Williams. Reno served under former Yale head coach Jack Siedlecki from 2002 to 2008, spending the first five seasons as the defensive backs coach. In 2007, Reno was promoted to assistant head coach.

In 2006, Reno helped to guide the Bulldogs to a share of the Ivy League Championship, their first since 1999, as well as Yale’s last win over Harvard. In 2007 and 2008, Yale’s passing defense ranked third in the nation in both seasons.

While Reno lacks head coaching experience at Division I programs, his popularity among former players may have helped to strengthen his candidacy.

Reno coached 15 All-Ivy players during his tenure at Yale.