Your weekend guide to races, and horses, of interest in the mid-Atlantic region.  Parx Racing holds its biggest day of the year — and it might be the track’s biggest day ever, with Kentucky Derby/Preakness hero California Chrome and sophomore filly division leader Untapable in the house.  And that’s not all: Charles Town highlights its top filly event, the G3 Charles Town Oaks, while Delaware’s G3 Kent is the final stake of its meeting.  Here’s what’s on tap:

Among the members of the Top Midlantic-bred Poll, only one horse is in action.  Miss Behaviour, sixth on the list, is the 5-2 favorite in Saturday night’s Grade 3 Charles Town Oaks.

FOCUS RACES SEPTEMBER 20-21

RACETRACKDAY/TIMECONDITIONSSTORYLINE
G3 Kent S.DELSaturday/R5/3:073yo, 1 1/8 miles turfG3 American Derby winner Divine Oath will look to fend off Bashart, who won the G2 With Anticipation as a juvenile, and Craftsman, the only runner with a local win.
Alphabet Soup H.PRXSaturday/R9/3:253yo and up, Pennsylvania-bred, 1 1/16 miles turfDefending champ Roadhog -- who just missed by a nose here in 2012 -- will look to recapture his winning touch. But among his rivals who could figure in the outcome are Page McKenney, who's won four straight; speedy Roanoke winner (on the dirt) Traffic Light; and Edge of Reality, beaten less than four by G1 winner Big Blue Kitten in his last turf try.
G3 Gallant Bob H.PRXSaturday/R10/4:003yo, 6 furlongsFast Anna, the lightly raced Kathy Ritvo trainee who nearly made off with the G1 King's Bishop at Saratoga, will look to fend off a group that includes local star Favorite Tale and Prudhoe Bay, who beat that runner last out in the G3 Jersey Shore.
G1 CotillionPRXSaturday/R11/4:45Fillies, 3yo, 1 1/16 milesThree multiple G1 winners -- speedy Sweet Reason, grinding router Stopchargingmaria, and division leader Untapable -- square off in a glamorous renewal of the track's top filly event.
Rachel's Turn S.CTSaturday/R2/5:30Fillies, 2yo, West Virginia-bred, 4 1/2 furlongsFlashy local maiden breaker Little Enemy -- an eight-length winner over the strip in August -- faces off against out-of-town winner My Sister Caro (who broke her maiden at Delaware) and Arlington shipper Harlan's Destiny.
G2 Pennsylvania DerbyPRXSaturday/R12/5:403yo, 1 1/8 milesUltra-speedy Bayern dazzled in winning the G1 Haskell in a loose-on-the-lead effort -- but he didn't have Kentucky Derby/Preakness hero California Chrome breathing down his neck that day. He will here.
Henry Mercer Memorial S.CTSaturday/R5/7:052yo, West Virginia-bred, 4 1/2 furlongsSaratoga maiden breaker Lamontagne, trained by juvenile wizard Wesley Ward, tries dirt for the first time against a state-bred group that includes smart first-out winner King of the Castle.
It's Only Money S.CTSaturday/R7/8:093yo and up, West Virginia-bred, 4 1/2 furlongsGreenway Court looks to defend his It's Only Money crown against a crew that includes the improved Halter Off, who's finished in the triple eight straight, including four wins.
Wild and Wonderful S.CTSaturday/R9/9:133yo and up, 7 furlongsMillionaire Pants on Fire looks to snap a five-race losing streak but will have to overcome a salty group that includes multiple stake winner Good Lord and 2014 national win leader Handsup Moneydown, who's already won 11 times this year.
Pink Ribbon S.CTSaturday/R10/9:45Fillies and mares, 3yo and up, 7 furlongsLarge and intriguing distaff group features NJ-bred speedster Geeky Gorgeous; 2011 CT Oaks winner Strike the Moon, who ran second in this event a year ago; and CT-lover Flattering Bea, who won the Sugar Maple in April and is 4-for-5 over the strip.
G3 Charles Town OaksCTSaturday/R1/10:303yo fillies, 7 furlongsGraded winners Miss Behaviour (G2 Matron) and Size (G3 Iowa Oaks) spearhead a strong field that includes a half-dozen other stake winners.



Check out...