O'Gara, 24, appeared in three games for Boston last season with a plus-one rating.
The beginning of the 2017-18 season marks O'Gara's third season in the professional ranks after joining Providence following his final season at Yale (2015-16). At the American Hockey League level, O'Gara has appeared in 67 games, posting 5-10=15 totals with a combined plus-15 rating.
O'Gara finished up his senior season at Yale in 2015-16 with four goals and eight assists for 12 points with 41 penalty minutes in 30 appearances. The 6'4", 207-pound defenseman recorded a career high in points during the 2014-15 campaign for the Bulldogs, scoring six goals and adding a team-high 15 assists for 21 points with 31 penalty minutes and a plus-15 rating. He also earned first-team AHCA/CCM All America and first-team All-ECAC honors. O'Gara played in all 37 games as a freshman in 2012-13, recording seven assists as he helped Yale capture the 2013 National Championship.
Prior to attending Yale, O'Gara played hockey at Milton (MA) Academy, where he served as a senior captain in 2011-12, recording five goals and 20 assists for 25 points in 24 games.
The Massapequa, New York native was drafted by the Bruins in the fifth round (151st overall) of the 2011 NHL Entry Draft.
TRANSACTION: Boston Bruins recall defenseman Rob O'Gara from Providence on an emergency basis.
