Kalinowski opened on the second nine at The Links of Glen Eagles and birdied his third hole. He added a 20-footer at his fifth hole and birdied his ninth to make the turn at 3-under-par 32.
On the second nine, Kalinowski birdied the first hole then parred the next five. He collected three birdies in his last four holes to go two clear of the field.
All of Kalinowski's birdies on Friday where from 10 feet or closer except for the fifth. He missed only two fairways and needed 29 putts to grab the lead midway through the tournament.
'The par-5s played very short today,' said Kalinowski. 'You have to take advantage of that. Coming in, I was just thinking about staying aggressive because the scores are going to keep going lower with the good weather. You've got to keep the pedal to the metal.'
Kalinowski was on his way to the Colorado State Open when he got a phone call informing him he was in this tournament. It all worked out for the former golfer at the University of Colorado, as the State Open was cancelled and Kalinowski made only his third cut in 27 starts on the Nationwide Tour.
'Things worked out great because that tournament got canceled because of sponsorship issues,' said Kalinowski. 'It's a great state open, been around for 30 years.'
Singh birdied four of his first six holes but staggered down the stretch. He mixed three bogeys and a birdie on his second nine for a round of 2-under 70.
'I think I tried pushing it too much,' said the 31-year old Singh. 'Human nature is you start pushing. You say 'I'm four-under, I'm going to make four more birdies, that's easy.' And that's the tough thing. I got ahead of myself today but that's okay, that's part of the learning.'
Standly had an indifferent round that featured seven birdies, three bogeys and a double-bogey at the par-3 12th.
'I actually hit the ball better today than I did yesterday,' said Standly. 'I had three three-putts today, one of them from eight feet. The speed was off. I'd leave it three, four feet short and then knock the next one six feet by. Other than that, I was very pleased with the day.'
David Branshaw (67), Rick Price (68), Tommy Tolles (67), John Morse (64) and Jason Dufner (64) share fourth place at 6-under-par 134.
The 36-hole cut fell at 1-under-par 139 with 65 players advancing to the weekend.