TUCSON – Arizona clinched at least a share of its first Pac-12 baseball title since 1992 Sunday with an 8-7 win over Arizona State.

Oregon and UCLA also could finish tied for first with wins Sunday.

Johnny Field drove in the winning run on a walk-off single with two outs in the bottom of the ninth at Hi Corbett Field off ASU reliever Robert Ravago. Riley Moore scored the winning run in the Wildcats’ second walk-off win of the weekend series.

No. 13 UA (38-17, 20-10) broke on top 4-0 in the first inning at Hi Corbett Field, upped its lead to 7-1 and held off rival No. 16 ASU (36-20, 18-12). The Wildcats will remain at home for the start of NCAA Tournament play as one of 16 regional hosts, also a first since 1992. ASU is ineligible for postseason due to NCAA sanctions.

Freshman left-hander Adam McCreery pitched 3.2 scoreless innings, allowing the Sun Devils to rally and pull even 7-7 in the eighth inning on a two-run double by Abe Ruiz.