The Bolton keeper's outstanding display against Hull might have been a huge shot in the arm for Wanderers' survival hopes - and the future of manager Gary Megson. But it could make for some awkward moments in his private life.
Jaaskelainen's children go to the same school as Hull boss Phil Brown's and the two are also part of a syndicate that owns racehorse European Dream.
After watching the Finland international produce a "world class" display to almost single-handedly to keep Hull at bay, Brown joked that he would be withholding Jaaskelainen's share in the horse.
But the keeper is confident a relationship that began when Brown was assistant to Sam Allardyce at Bolton will remain intact.
"If I see him at the school gates on Monday I will nod - it doesn't matter because he is a friend of mine," he said.
"Hull are working hard as a team but so are we. Hopefully we can start pushing now and catch them.
"It is no surprise to me Phil has done well. He was under Big Sam and he did well then."
Jaaskelainen and Brown bought European Dream along with Allardyce, Gary Speed, Kevin Nolan and Kevin Davies after Bolton qualified for the UEFA Cup in 2005.
And as far as Brown is concerned the 33-year-old, who looked set to quit the Reebok in the summer, is a thoroughbred.
"I'm not surprised to see Jussi still going strong at this stage of his career. Goalkeepers are like fine wine, they mature with age.
Awesome
"The quality he's produced over the years has probably been one of the main reasons that Bolton have been a Premier League team for six or seven years.
"He's a very steady character and a family man and I've got nothing but praise for him he's a credit to the profession and to his club."
After Matt Taylor put Bolton ahead five minutes after half- time with a trademark volley, it was Jaaskelainen who staved off a late Hull onslaught.
He saved from a Geovanni free-kick and then denied the Brazilian again with an awesome double stop.
Hull finally looked to have broken Bolton's resolve when Marlon King spun on the edge of the box, but again Jaaskelainen produced heroics - blocking the shot and then getting to his feet to push the ball away from Geovanni.
It left Gary Cahill relieved the keeper opted to stay at Bolton when his contract ran out at the end of last season.
"I feared he might fancy a change to freshen things up," said Cahill. "It was great when he did commit himself and everybody was over the moon.
"People give credit to goal scorers, but his three saves were just as important for the three points."
Victory eased the pressure on Megson, who has picked up six points in his last two games to drag Bolton away from the relegation zone.
But the under-fire manager still had to face abuse from his own fans, who even in victory, again took the opportunity to voice their opposition to him.
After trying to take some of the heat off his boss, Jaaskelainen then offered his support to Megson.
"The fans' reaction doesn't mean anything because what is important is what we think in the changing room," he said.
"If we don't win, the fans are going to turn their backs on us so we have to keep working hard and believing in what we have been doing.
"I feel very comfortable. This time last season I was concerned because we had not been working as a team and were not doing well. But this season it has been a different story."
Next up for Bolton is the daunting task of Liverpool - but after victories over City and Hull, he is confident they can build on that platform.
"The object is still to do what we were doing six days ago, which is trying to get ourselves away from the bottom of the table," he said.
"There's probably 14 teams trying to do that so we will still be looking over our shoulders.
"As you've seen, all you need is two results. I've never known it that you can get two results and sail up the table. Everton have done it, Boro did it and we've done it at the moment. But we've got to push on.
"You don't really look at the table at this stage of the season. But it does make a difference to how you are viewed.
"When you're bottom of the table there is a lot of pressure on the players. We're now six points better off and in an entirely healthier position. It just shows you how close it is. It's unbelievable.
"I was getting stick again, but it doesn't matter. It's water off a duck's back, it doesn't bother me too much. I have to cope with that and it's quite easy for me to do so. I just stand there and try to ignore it.
"It's difficult for the atmosphere that the players have to play in, but the last two games they have played in that and managed to get results."
BOLTON: Jaaskelainen 9, Steinsson 7, Cahill 7, Andrew O'Brien 7, Samuel 6, Muamba 7, Gardner 7, McCann 6, Taylor 7, Elmander 6 (Smolarek 77, 6), Davies 7. Not used: Al Habsi, Helguson, Shittu, Basham, Sissons, Obadeyi.
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