Pospisil faced plenty of pressure against the Israeli dubs team who are top doubles players as well as all of his singles wins in Davis Cup last year. Just because he lost against Tsonga yesterday does not mean he doesn't handle pressure well.
The shoulder problem is really unfortunate. Vasek shouldn't have played yesterday anyway so he would be fresher for the more important Saturday and Sunday matches.
Now, Raonic pretty much has to win today and tomorrow.
And at the same time not to get too tired right before his title defense in San Jose.
Overall, I'm not exactly ecstatic about this.