RBC Canadian Open 2015: Leaderboard Scores and Highlights from Friday

Coming off last week's thrilling British Open, the PGA Tour ventures to Canada this weekend for the RBC Canadian Open. Chad Campbell is off to an excellent 36-hole start, anchored by Friday's 63 that pushed his score to 14 under. 

There are a lot of low scores going around Glen Abbey Golf Course so far. Campbell can't start planning his victory parade yet because Brian Harman is only two shots behind with David Hearn and Johnson Wagner tied for third place at 11 under. 

It's been four years since this tournament was won with a score worse than 16-under par, and this year's event is shaping up to be no different. No one has hit 20 under since Tiger Woods in 2000, so there's still hope to see something historic this weekend. 

If you have ever wondered how to shoot 63 in a golf tournament, Campbell provided a good template on Friday. The key seems to be not having any bogeys, combined with nine birdies. The PGA Tour tweeted out all of the stats from his round to show how that score happens:

It may be difficult for Campbell to duplicate that round on Saturday, but he's been on point for most of the tournament. His only missteps came on the back nine Thursday with bogeys on 11 and 17. 

The Canadian Open has been very giving with low scores, so Campbell's spot in the driver's seat does have to give him confidence. He's trying to end an eight-year winless drought on the PGA Tour, with his last win coming at the Viking Classic in 2007. 

As impressive as Campbell's performance so far this weekend has been, he's got nothing on Wagner. The 35-year-old is on an incredible run of sub-70 rounds, per PGA Tour Media:

According to Justin Ray of the Golf Channel, the longest such streak of rounds in the 60s since 1980 is 17 by Bob Estes in 2001. 

The difference is Estes had two wins during the 2001 season, though both didn't occur during his streak. Wagner has finished in the top 10 twice but not higher than fifth during his current run. That could change this weekend with two more rounds in the mid-60s. 

After Campbell's 63, the best round of the day belonged to Hearn. The Canada native had a bogey-free 64 to stay within screaming distance of the lead. He's been on the edge of winning at various points this season with three top-10 finishes, including a playoff loss at the Greenbrier Classic three weeks ago.

One player who was unable to take advantage of the scoring conditions was first-round leader Emiliano Grillo. He came out of the gate strong with a 64 on Thursday, but he could only muster an even par 72 in the second round to end at eight under.

Speaking after his stellar opening round, Grillo did give credit for his performance to the back nine, via the Associated Press (h/t ESPN.com). 

"I played better on the back nine, which is harder, and the greens were drying out," Grillo said. "I kept hitting some solid shots until the end of the round, and I made some good putts on the back nine."

On the final nine holes today, Grillo had two birdies that were offset by two bogeys.  

One player who did take advantage on the back nine, particularly the last three holes, was Bubba Watson. The big hitter set himself up for two eagles on the last three holes, via PGA Tour:

Taking things back a little further, Watson played the final four holes five-under par to bring his overall score to nine under. It's been a running theme for him thus far, as noted by Ray:

That's certainly a big confidence boost for the 36-year-old after missing the British Open cut. Watson has a climb to threaten Campbell, but at least there are signs of encouragement coming from the American star. 

Another player who ended the second round in grand fashion was Jason Day, who fired this eagle on the 18th hole, via PGA Tour:

That shot moved Day into fifth place with a two-round score of 10 under. He's got to get more consistent on the course after shooting three bogeys, including back-to-back on No. 14 and 15, but having seven birdies and an eagle makes things look a lot better.  

As many great performances and individual shots as Friday provided, Campbell has been the standout performer thus far. His track record of success on the PGA Tour isn't a long one, so everyone looking up at him within a handful of shots has every reason to feel confident. 

Six of eight players tied for sixth or better shot between 63-67. If that trend continues into the weekend, there will be a terrific battle for the top spot with 36 holes to play. It's a very good and crowded leaderboard, so expect a lot of shifting in Canada.