with an emphatic 4-1 defeat of Dundee United on Sunday.
Thistle.
25 points from 10 games.
Second-placed Hearts, who have 19, play Hibernian on Monday.
Rangers are third on 15 points, level with Kilmarnock, who beat Aberdeen 1-0, and one point ahead of Caley and St Mirren.
lashed in a low shot from just inside the box.
Tobago forward Collin Samuel after 18 minutes.
Nakamura made them pay for that miss a minute from the interval, forcing the ball in at the back post to equalise.
Vennegoor of Hesselink to fire a low shot after 53 minutes.
Czech Jiri Jarosik.
"(Nakamura) is a top, top player. He really is," Celtic manager Gordon Strachan told BBC Radio Scotland.
where he is just untouchable."
Caley's Graham Bayne scored the only goal at Ibrox, scrambling Craig Dargo's shot in the 72nd minute.
Rangers manager Paul Le Guen refused to blame Letizi, back in the side for the first time since a calf strain in August, for the giants.
"I don't want to speak about it. It is between us and it's (private)," said Le Guen, whose decision to drop Allan McGregor in favour of Letizi went down badly with Rangers fans.
Le Guen added: "We are lacking inspiration.
..we are lacking score.
"But I am with the players when it is difficult.
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