Acorn, who won the Grade 1 Challenge Championship Quarter Horse Derby last November at Fair Grounds, will return to the 400-yard distance of that race Sunday for the Grade 3, $50,000 Miss Polly Classic at Delta Downs.

The field also includes Wrs Special Shoe, an earner of more than $800,000, and Charal Kid, who took the Grade 3 Develop a Plan Stakes at Delta in his last start May 23.

Bach’s Homebrew should get ample pace to run at as a strong field of eight older horses goes six furlongs in the $15,000 President’s Cup Stakes at Lincoln Race Course.

Bach’s Homebrew exits an impressive nine-length win over Nebraska-bred rivals in the Big Red Mile locally on May 30. It was his second stakes win of the year after taking the Ogataul Stakes at Fonner Park in March. A 4-year-old son of Milwaukee Brew, Bach’s Homebrew is unbeaten in four stakes appearances over this track, including a romping 12- length win in the Lincoln Derby last year for trainer Larry Staroscik.

Golden Springs spent her spring racing against some tough fillies. She hooked eventual Kentucky Oaks winner Plum Pretty in March, and in her last two starts faced the talented sprinter Grandacious.

The company lines make Golden Springs an interesting prospect for the $40,000 Molly Brown at Arapahoe Park on Sunday. The six-furlong race for fillies and mares is one of two stakes on the card. The $50,000 Lucille Rowe Derby is for Quarter Horses bred in Colorado.

INGLEWOOD, Calif. – Ryehill Dreamer, winner of the Grade 2 American Handicap on May 28, has been taken out of training with a tendon injury, trainer Julio Canani said.

Owned by Marsha Naify, Ryehill Dreamer won his first stakes in the United States in the American Handicap over a mile on turf, his seventh start in this country. A winner of 5 of 12 starts and $296,807, Ryehill Dreamer, 5, was considered a candidate for the Shoemaker Mile on July 2 before the injury was detected. He is expected to be sidelined until 2012.

Jockey Tony McNeil will not be working this Father’s Day, but he will still be at Lone Star Park on Sunday to watch his sons, Bryan and Erik McNeil, ride against each other in the first three races on the card.

ELMONT, N.Y. – There are times when John Fort thinks to himself that he can’t have a bigger thrill in racing than he had winning the Kentucky Oaks last month with Plum Pretty.

“After the Oaks I said, ‘I can’t have any more fun than this, why even think about racing her again?’ ’’ Fort said Thursday. “But she’s a race horse.’’

OCEANPORT, N.J. – Teaks North and Sleepless Knight, the one-two finishers in the Grade 3 Monmouth Stakes last weekend, could both be heading for the meet’s top turf event: the Grade 1 United Nations on July 2.

Teaks North would be bidding for a second Grade 1 win of the season, having taken the Gulfstream Park Turf Handicap.

Teaks North is now 3 for 3 on the course, following his three-quarter length win in the Monmouth. Trainer Jason Sallusto said the 4-year-old gelding came out of the race in good shape and that he’s excited by the Teaks North’s upside potential.

MIAMI – The Summit of Speed is still three weeks away, but one horse already committed to the program is Noble’s Promise, a onetime Triple Crown candidate who has found a second life as a sprinter under the tutelage of trainer Ken McPeek.

Noble’s Promise finished fifth after making the lead at the top of the stretch in the 2010 Kentucky Derby, but following a nice fifth-place effort in the St. James Palace Stakes one year ago at Ascot, McPeek gave him some time off and put him on a new career path, one that has worked out extremely well thus far.

VANCOUVER, British Columbia – Glen Todd and Patrick Kinsella, the leading owners at Hastings, are intent on winning the Grade 3, $200,000, British Columbia Derby. Early nominations to the premier race at Hastings closed with 56 nominations. The derby heads six stakes races that are scheduled for Sept. 11.

AUBURN, Wash. – Noosa Beach, the rock star of Northwest racing, can add to his string of No. 1 hits when he starts as the high weight and odds-on favorite Sunday in the $50,000 Budweiser Handicap at Emerald Downs.