Interesting account on twitter for penalty conversion rates, @PenaltyKickStat. Caley RT'ed about Walcott's miss. Here is a view of all penos Miggers has faced since 09.
Walnut's miss isn't on there, but it was in the bad zone at 60% conversion chance. BTW, Caley had xG at 0.6 + 1 pen to 1.5. Crazy conversions. I can't help but think that sick Mane goal was going to be about 20 yds off target >50% of the time considering how he snatched at it. PlopBoom early is great for almost everyone, so not too disappointed.