Not sure "mediocre" is fair. For starters, he was the backup to no other than Ed Belfour who was voted best goaltender in 1990-91 and #3/4 in the season afterwards. Belfour's SV% in his Vezina season was .910, Hašek's in the same season was 0.914 (the sample size is small though with only 5 games played). The season afterwards, Belfour was still considered one of the top goaltenders in the league with a SV% of .894 while Hašek's SV% that season was .893. In other words, Hašek matched up well with one of the best NHL goalies.
He couldn't beat out Jimmy Waite for the job. But performance-wise? Let's take a closer look.
When Hašek comes over to North America in 1990 at the age of 25, he has three Czechoslovak
Golden Sticks and three World Championship All-star honours under his belt. His Izvestia
Golden Stick finishes make him look like the best European goaltender since Vladislav Tretyak. He's an established star in Europe and comes over with the respective confidence. In the preaseason, he makes
a strong impression in the Blackhawks training camp. He gets to play in five NHL games for Chicago and stops 85 out of 93 shots on his goal. Then he is sent down to the Indianapolis Ice in the IHL. Hašek is disappointed. According to his agent Rich Winter: "
If he'd have had a bad training camp, he could have easily handled going to the minors. But if he wasn't the best in preseason, he was one of the best. So he's confused he's not here... He still feels he's the best goaltender in the world. His confidence isn't shaken." Hašek's own take: "
I'm as good as Ron Hextall and Grant Fuhr. They just don't know it yet."
In Indianapolis, Jimmy Waite is the reigning IHL All-star goaltender. Hašek outplays Waite by far (2.52 GAA vs 3.47 GAA) and tops the IHL in the statistic metrics. Lowest GAA (the 2nd best goaltender, future NHLer Guy Hebert, is at 2.87, everyone else has 3.26 or worse), most shutouts, SV% .915 (
source). He is voted IHL All-star goaltender. After the regular season, he is called up to Chicago as back-up for Ed Belfour in the Stanley Cup playoffs. He gets to play in three games and stops 36 out of 39 shots for a SV% of 0.923 (Vezina winner Belfour has 0.891 in six playoff games).
And yet, he finds himself as #2 behind Jimmy Waite in Chicago when Ed Belfour holds out for a better contract in October 1991. Now, is that an argument against Hašek or against the Chicago Blackhawks? Personally, I don't believe in the wisdom and infallibility of NHL coaches enough to be convinced it's the former. Hašek, as his head coach Mike Keenan put it, "
was just learning to speak English and had this crazy style" he wasn't willing to adapt. It went against everything in the hockey goaltending 101. "
Dypsomaniacal triangulations & just pure stunts" and an "
absolute freak show", to quote Killion. It's the same crazy style he went on to win his Vezina trophies with.
By the way, here are the Blackhawks' goalie SV% that season (1991-1992):
Belfour .894
Hašek .893
Waite .844
Judge for yourself.