The Scottish Premier Division title has been knocking on the door of Celtic Park, waiting to be let in, for several weeks, but Rangers could yet yank it back across Glasgow to Ibrox.

In the most extraordinary finish to the championship in 25 years - it was back in 1973 when last the Old Firm rivals could both win on the final day - Celtic must beat St Johnstone at home today to be certain of the title.

Rangers travel to Tannadice to meet a Dundee United side they have to beat to retain a hope. Two points and one goal behind Celtic, anything other than victory would deny them a 10th successive championship. Having scored more goals than Celtic - 74 to 62 - a Rangers win would leave the Parkhead side having to win, as a draw would leave them second on goals scored.

Celtic have been accused of losing their nerve when in a position to tie things up, especially in last Sunday's draw at Dunfermline. But it is much more likely that they have had problems with their form rather than their temperament.

A team crammed with internationals, accustomed to the fraught occasion, is unlikely to suffer anxiety attacks. They have been seriously flawed, however, in drawing their last two games, against Hibernian and Dunfermline.

Rangers and their fans can hardly believe their prospects are still alive. Defeats by Aberdeen and Kilmarnock in recent weeks should have been enough to rule them out of it, but Celtic have consistently invited them back in.

Rangers are without their goalkeeper Andy Goram and midfielder Jonas Thern because of injury. Celtic's only doubt is the defender David Hannah, who has not been a regular in any case.