Full-time: Robinson earns Derby County a point against 10-man Cardiff City
THEO Robinson's eighth goal of the season earned Derby County a 1-1 draw with Championship leaders Cardiff City at Pride Park Stadium.
Heidar Helguson gave the visitors a 10th-minute lead but, after Craig Noone had been sent off for a second bookable offence, Robinson levelled.
His 69th-minute strike gave the Rams hope of a fourth successive home victory but they were unable to find a winner.
Will Hughes was passed fit to start for the Rams after shaking off an ankle injury he picked up in Saturday's 3-2 win over Birmingham City.
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As a result, manager Nigel Clough was able to name an unchanged side to face Cardiff.
That meant Nathan Tyson, who came on as a substitute to score a late winner against Birmingham, had to settle for a place on the bench once again.
Cardiff created the first opening inside 90 seconds but Craig Bellamy blazed over from Aron Gunnarsson's cut-back.
Derby went close from Paul Coutts' fourth-minute corner but Richard Keogh's header was helped around the post by the man on the line, Noone.
Hughes' centre just evaded Robinson - and the visitors took the lead soon after.
Noone whipped in a cross from the left and Mark Hudson, still up following a long throw into the box, looped a header goalwards.
Keeper Adam Legzdins could only tip the ball on to the bar and Helguson was on hand to force it home from close range.
Michael Jacobs tried his luck from outside the box but his effort was always drifting off target.
At the other end, Kim Bo-Kyung dragged a low shot across the face of goal.
Craig Bryson combined well with Conor Sammon to get himself into the area after 25 minutes but keeper David Marshall was out quickly to block at his feet.
Derby lost left-back Gareth Roberts to injury, so James O'Connor came on to replace the former Wales international.
The Rams almost equalised in the 36th minute.
Robinson worked his way into the box and eventually teed up Coutts, whose low first-time shot looked destined for the bottom corner before Marshall intervened with a smart save.
In added time at the end of the half, Coutts' free kick from the right was headed over by Jake Buxton.
Clough changed his formation after the break from 4-4-2 to 4-3-3, with Coutts moving into a central midfield position and Robinson going out wide.
Derby were pinning Cardiff back but the visitors nearly added a second after 59 minutes when Matthew Connolly released Bellamy but he fired wildly over the bar.
The visitors were reduced to 10 men in the 62nd minute when Noone picked up two bookings in quick succession.
The winger had only just been cautioned for a tackle on John Brayford when, as the Rams cranked up the pressure, he made a late challenge on O'Connor.
Jacobs beat three men on the left but slashed his shot well wide - and was soon replaced by Tyson.
Derby equalised in the 69th minute.
O'Connor's pass found Sammon, who span and released Bryson. Running away from goal, his low centre beat Marshall and Robinson side-footed home from close range.
Cardiff might have regained the lead in the 75th minute when Helguson beat Legzdins in the air from Peter Whittingham's long ball but the striker could not direct his header on target.
The Rams pushed for a winner, with Bryson volleying wide from 20 yards.
Full-back Brayford then went close twice in a matter of seconds. First, his powerful drive was parried by Marshall, then he glanced a header just wide from Coutts' cross.
The hosts had a big shout for a penalty in the 83rd minute when Coutts' cross appeared to strike the arm of Whittingham but referee Mark Brown waved play on.
Deep into stoppage time, Tyson almost won it for Derby but his header was cleared of the line by Connolly.
DERBY COUNTY: Legzdins, Brayford, Keogh, Buxton, Roberts (O'Connor, 27), Coutts, Hughes, Bryson, Jacobs (Tyson, 67), Robinson (Hendrick, 82), Sammon. Other subs: Fielding (gk), O'Brien, Freeman, Davies.
CARDIFF CITY: Marshall, Connolly, Nugent, Hudson, Ralls, Noone, Bo-Kyung, Gunnarsson (Conway, 73), Whittingham, Bellamy (Mutch, 70), Helguson (Mason, 79). Other subs: Parish (gk), John, Kiss, Gestede.
REFEREE: M Brown (East Yorkshire).