Astros is the first professional sports team to switch to a new type of grass turf …Platinum TE Paspalum sod …created by Turf Ecosystems LLC, based in Naples, Fla., …

“The new grass has a better tolerance to low light but we wanted to do better with traffic issues,” Ron Duncan, Turf Ecosystems company vice president said “When the Astros have two weeks at home, those areas where the outfielders like to stand all the time get some wear.”
Link

Swinging your head around to watch the ball fly out of the park doesn’t require moving the feet.