The Blues conceded late to lose 1-0 and Jackett admitted the goal was frustrating.
Joe Mattock headed home deep into injury-time, leaving Pompey ninth in the League One table.
WATCH: Jackett gives thoughts on Pompey defeat
POMPEY boss Kenny Jackett said his side did not do enough to earn a win in their defeat at Rotherham this afternoon.
By The Newsroom
Saturday, 20th January 2018, 5:39 pm
Updated Saturday, 20th January 2018, 5:42 pm
