LONDON - It is being billed as businesslike versus brash. Soft-spoken Canadian Milos Raonic against outspoken Aussie Nick Kyrgios in the third round of Wimbledon.

Raonic is the type of player who internalizes his emotions on court. He is cerebral in interviews and on the playing surface. Kyrgios lets his emotions flow. He seems almost eager to stand up to chair umpires on the court and reporters off it.

Following his second-round win, Raonic was asked about the clash of personalities that lies ahead.

"I really couldn't care less," Raonic said. "My job is to go out and find a way to win a tennis match."

Raonic was asked about the fact Kyrgios has started wearing a sleeve on his arm at Wimbledon. The big-serving Canadian has been wearing a sleeve for some time. So, is this a battle of the sleeves? Loser takes his off?

"I think that's irrelevant," Raonic said with the smallest of smiles.

Raonic was equally nonplussed when asked about his 145-mph serve on Wednesday, which was the third fastest in Wimbledon history and within striking distance of the 148-mph record bullet served by Taylor Dent in 2010. 

"There isn't any significance," Raonic said when asked about the accomplishment. "As long as the serve doesn't come back, I'm happy."

Raonic doesn't take the bait. Kyrgios devours it. 

Kyrgios has sparred with the chair umpire in both his matches so far at this year's Wimbledon. In his match Monday he uttered the words, "dirty scum," after he disagreed with a call that went against him. He claimed he was talking about himself. He was pressed by a reporter about why he'd say something like that to himself.

"'Cause I can," was the retort. 

Is he worried about getting a bad reputation? 

"I play the sport the way I play it. I'm not going to change, you know."

He later added, "I think the sport needs characters. I feel like, you know, it's good when you see someone that's raw and just plays the game the way they play it; doesn't really worry about other stuff when they're out there."

In his second-round win, Kyrgios got in trouble for swearing loudly on court. Does he understand why there is concern? 

"I'm aware of what I'm saying," he said. "I'm in pain and I'm playing a tennis match at Wimbledon second round - a bit of stress out there." 

Is Raonic aware that Kyrgios is just as likely to drop F bombs as drop shots? 

"My job is only myself," Raonic said. "That's my first job. I need to take care of myself. All those [other] things are out of my control."

The funny thing is, as different as Raonic and Kyrgios seem to be off the court, they play very similar games on it. It’s all about big serves and big winners. 

"For both of us, it's going to be first‑strike tennis," Raonic said. "I think we both do well, especially when serving, on probably two-to-five-ball rallies. I think that's sort of both our strengths. It's about who can sort of manage to take it over and dictate more in those situations."

"Obviously, I've got to look after my serve," Kyrgios said. "I don't want him breaking me too many times. I have to try to keep creating pressure on his serve and do whatever I can, scrape out points. I’ve got to stay competing the whole time, from the first ball to the last."

One clear edge Raonic may have in this match is his experience and maturity. 

Raonic is all about learning and evolving. Wimbledon used to be a difficult place for him, but last year it became the site of his best ever grand-slam performance as he advanced to the semifinals.

"I have learned to like it," Raonic said of the grass surface. "It wasn't an initial feeling. I had a terrible memory here in 2011 slipping and having to go a few days later to hip surgery. Few years of struggles after that because I just didn't understand it. But when I sort of got that understanding and knowledge of what I need to do. It has always been a fun challenge."

He used to serve differently on grass than other surfaces, but has made adjustments. 

"Before, I thought I could sort of get away with sort of just throwing it down just because it's grass and it would sort of slide away from the guy. Then I realized last year, I learned quite a bit how important it is to keep going for it full out all the time."

"I wish I had a serve like that just one time in a match just to see how that would feel," said Tommy Haas, the man who lost to Raonic in the second round.

Raonic is four years older than the 20-year-old Kyrgios, who burst onto the scene last year with his biggest win coming over top seed Rafael Nadal in the fourth round of Wimbledon. 

Perhaps the edge in experience will allow Raonic to best his fellow rising star on Friday.

The two have played twice before and both times at grand slams. Raonic won both including a four-set affair in the quarter-finals of last year's Wimbledon. 

"I remember that there were many difficult moments, but I felt that the thing that helped me the most was my calm demeanour," Raonic said. "In that sense, I had quite a few opportunities a few different times. I wasn't making the most of them, but my attitude was what sort of helped me get over that hump and sort of clear my way through that match."

"I'm excited," said Kyrgios. "Obviously to play a guy like that, he's pretty much at the top of the game. After last year's performance against him I'm confident I can do well. But at the same time, if a guy is serving as wells he is, it's going to be tough. I know what I have to do out there."