A Pioneering filly worked a quarter mile in :21 2/5 Sunday, posting the fastest time for the distance during the third session of the under tack show for the Fasig-Tipton Midlantic sale of 2-year-olds in training in Maryland. The session was added because of rainy weather on Friday. Fasig-Tipton officials gave the consignors with horses scheduled to work at Timonium then the option of waiting until Sunday. The first session of workouts was held on Thursday.The Pioneering filly was produced from the unraced Sir Raleigh mare Timeleighness and is half-sister to stakes winner Lavish Numbers (by Polish Numbers). The filly is consigned by M and H Training and Sales, agent.A Gold Fever -- Vivano colt and a Northern Afleet -- Communicator Madam colt named Quick Solution were the fastest workers at an eighth of a mile, each with a clocking of :10 2/5. The Gold Fever colt is consigned by Terry Oliver, agent. Quick Solution is consigned by McKathan Farms, agent.A Smoke Glacken -- Baydon Belle colt turned in the fastest three-furlong work, stopping the clock in :33 1/5. He is consigned by Niall Brennan Stables, agent.The sale is scheduled for Monday and Tuesday, with each session beginning at 10 a.m. (EDT).