ARLINGTON HEIGHTS, Ill. (CBS) — A contract settlement has avoided a disruption of the season at the Arlington Park racetrack.

As CBS 2’s Susanna Song reports, after eight hours of intense negotiations, Arlington Park and the horsemen have reached an agreement.

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Because of the contract issues, many horses had been held out of the lineup for opening day. While there will be fewer horses than normal, races will run Friday, starting at 11:15 a.m.

Fans who also attend the races on Saturday can place bets on the Kentucky Derby.

The agreement wasn’t easy to reach.

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The two sides spent a week hashing out the language of the contract. The biggest barrier was around how much casino impact money the horsemen should receive.

The Illinois Thoroughbred Horsemen’s Association also refused to allow Arlington to accept wagers from bettors in other states.

The bottom line is that everything is in place for Opening Day.

The field sizes are much smaller for the Friday and Saturday races. Because of the uncertainty of the contract, not as many horsemen entered their horses.

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But a park spokesman says the park is receiving more entries starting Thursday for Sunday’s races, and the typical number of horses should be on the track for Sunday.