South Korea opened their Olympic Group B campaign with a 0-0 draw against Mexico on Thursday, while Switzerland secured a point in a 1-1 draw with Gabon.

The pair clash on Sunday with all four teams in the group currently on a single point and with victory sure to be enough to secure a spot in the latter stages.

Korea are expected to make a couple of changes to their starting side, but Arsenal striker Chu-Young Park will reportedly keep his spot in attack.

Switzerland could remain unchanged following their opening-day draw, with Admir Mehmedi keeping his place alongside Josip Drmic in attack.

Possible lineups:

South Korea: Jung; Oh, Yun, Kim Y, Hwang; Ki S, Kim B, Ji, Nam; Kim H, Park

Switzerland: Benaglio; Daprela, Affolter, Klose, Schar; Hochstrasser, Wiss, Abrashi, Frei; Mehmedi, Drmic

Sports Mole says: 1-1