The Rovers boss surprised many when 21-year-old goalkeeper Kean was given the nod to start his first league campaign, and although Kean ended the game on the losing side, Berg was pleased with the way he handled himself.
"It was a tight decision, a tough decision, because Paul has played every game," Berg told Rovers Player
"At the same time we've not had the results we would have liked so I thought I would give Jake a chance this time.
"It was quite tight between the two of them so I thought it could have helped us a little bit.
"I couldn't complain about Jake for their goals, it was difficult for a goalkeeper, but I thought he did okay.
"You have to expect that every player is ready when they get the chance and I think he did okay, he couldn't do much about their goals and apart from that he didn't have to make many saves, they hardly had a shot on goal apart from the two goals they had.
"He made one good save from a free-kick and he came for one cross, but apart from that he wasn't troubled."
Rovers are back in action at Ewood Park this Saturday when Brighton are the visitors. Tickets are on open sale right up until kick-off, priced from £15 for Adults, from £10 Seniors and from £5 Juniors.
Book online today at www.onerovers.co.uk
and collect your tickets from the Blackburn End collection point on the day of the game.