Jockey John Baboolal was suspended by racing stewards at Pimlico today, pending a hearing. He will not be allowed on track grounds until that hearing is held.

The stewards would not comment until Baboolal has had time to hire a lawyer and until results of a urinanalysis ordered by the stewards are obtained. The stewards, said Jon Lusher, head agent in charge of security at Pimlico, can order a urinalysis on any licensee at any time "for probable cause."

Baboolal, 35, was reinstated as a jockey after serving a 10-year suspension for his role in the fixing of a race at Bowie in 1975. He has ridden more than 45 winners since his return last winter, including seven at the current Pimlico meeting, where he is 10th in the jockey standings.

Speaking outside the grandstand at Pimlico, Baboolal said track officials came to his locker in the jockeys' room and "demanded that I take a urinalysis. I agreed, since I am clean. They found some syringes in my locker area, which I explained were to administer some vitamin B-12 shots since I have had a severe cold the past few days. That's why I took off all my horses last weekend."

Cosmic Tiger made it two victories in a row at Pimlico when he won today's feature race by more than two lengths over Babbling Brook. Blink Blink was third.

Cosmic Tiger is a daughter of the Nashua stallion Tim The Tiger and is trained by Charles Lewis. The 2-year-old filly ran the six furlongs in 1:13 and paid $4. The 2-7 exacta returned $19.20.

Jockey Jesse Davidson escaped serious injury in the feature race when his mount, Janet's Baby, stumbled at the start, throwing him to the ground. He was examined in the track's first-aid room and did not ride again.