Happy Valley will be hoping to make amends for their disastrous opening AFC Cup match against minnows New Radiant of Maldives last week as they step up a gear against Singapore's Home United at Mongkok Stadium tonight. Beaten 2-0 in a group E match in which they enjoyed 80 per cent of the possession, Happy Valley will be looking to return to winning ways against United, who are struggling third from the bottom in the S-League. 'Last year, we lost to Home United in both legs, 5-1 away and 1-0 at home. But things are different now. We played Home United away last time with virtually a second-string team because we were suffering from injuries,' said Happy Valley manager Lim Fong Kee. Happy Valley had eight players away on national duty recently when the SAR took part in the East Football Championship qualifiers in Taipei. Centre half Shum Kwok-keung and midfielder Cheung Sai-ho are doubtful for tonight's clash after picking up ankle injuries in the Taiwanese capital. Home United began their AFC Cup campaign on a winning note by defeating Malaysia's Pahang FA 2-0 with goals from Peres de Oliveira and Fahmie Abdullah. But the club returned to earth by losing a league match against Singapore Armed Forces 1-0 last Saturday. Meanwhile, Hong Kong league champions Sun Hei will be hoping to continue their fine start in the AFC Cup when they challenge Tampines Rovers in Singapore in a group D match. Sun Hei started their campaign by thrashing Maldives' Valencia 6-1 at Mongkok Stadium and are confident of continuing their fine form against Tampines, who are lying second in the S-League behind leaders Woodlands Wellington FC. Sun Hei coach Koo Luam Khen said: 'Several Sun Hei players were involved in the East Asian Football Championship and may be a bit tired from that campaign. But we've got many experienced players and it shouldn't be a problem for them with all the travelling.'