I saw Sijsling playing vs Tursunov once. His serve is pretty good (as stat shows). Unfortunately he had to retire from that match due to injury, otherwise he'd have won. So gotta give credit to Sijsling as well and oh yes, Grigor could have done better than 2 & 2.
I'm hoping he can draw a line under last week's poor result and find some good form again. Dodig is obviously a good player, especially on this surface but if Grigor plays his best tennis, he can win this.
Dodig is definitely a tough player, having beaten Nadal this year; I'm still perplexed how Grigor's serve was broken so many times last week. My guess is that Sijsling returned really well and was on a roll on serve. Grigor will have to avoid getting into long rallies with Dodig and attack Dodig's serve. Grigor can certainly win, but it's really up to him to come through on the big points.