Z10 - A1 - S1 - T1 - R1 - U1 - G2 - I1 has 18 points in Scrabble!
Z10 - A1 - S1 - T1 - R1 - U2 - G3 - I1 has 20 points in Words with Friends!
Found in the OTCWL2014, SOWPODS, ENABLE, and WWF dictionaries