People here in this forum tend to keep their eye only on the top players and the up and comers.
Gilles was ranked at the beginning of last season 368 and he climbed all the way to 36 (new career high) 2 weeks ago.
He has 3 top 20 scalps this season: Bautista Agut, Isner and Dimitrov.
Yes he relies o a lot on his serve, but also, many keep saying there are not enough serve and volleyers.
Well, here is one for you. And he has a great time right now. Apparently he has added a new coach, and doubles partner to his team, Jamie Delgado and he makes a difference, looks like.
EDIT: He has now 4 Top 20 victims, I forgot that Goffin in R1 was another top 20 player.