The objective of this study was to evaluate performance of “long yearling” stocker steers grazing ‘Coastal’ bermudagrass (Cynodon dactylon [L.] Pers.) and supplemented daily with titrated levels of DDG. Steers (n = 63 [7 testers per pasture; 4 Brahman, 3 other], 352 ± 7.6 kg initial BW, approx. Fifteen mo of age) were stratified by BW within source (Overton or McGregor) and known sire breed type (Angus or Charolais, both with Brahman crossbred dams; or purebred Brahman) and allocated randomly to 1 of 9 paddocks (1.3 ± 0.17 ha), and paddocks were allocated randomly to 1 of 3 levels of DDG supplementation for the 96-d study: 0.00, 0.25 or 1.00% BW hd⁻¹ d⁻¹. Animals were group-fed daily at 0800 h, and bunk space was allowed at a minimum of 61 cm hd⁻¹. Forage mass was assessed by destructive harvest of four 0.09-m² quadrats throughout each pasture on 21-d intervals. Steers were weighed every 21 d, and grazers were added to each pasture based on visual and numerical assessments to maintain vegetative growth while preserving ad libitum intake and selection. Data were analyzed using SAS PROC MIXED. Average daily gain was greater (P < 0.05) from steers offered 1.00% BW daily (0.97 kg d⁻¹) compared with those offered 0.00 or 0.25% BW daily (0.71 and 0.69 kg d⁻¹, respectively), and Bos indicus steers gained more (0.93 kg d⁻¹; P < 0.05) than B. taurus steers (0.72 kg d⁻¹). Supplement to gain ratio was not different among treatments (P = 0.29) or species (P = 0.76). Pastures in which supplement was offered at 1.00% BW tended to sustain more (P = 0.06) AU (363-kg steer) per ha (8.8 AU ha⁻¹) compared with 0.00% pastures (6.3 AU ha⁻¹), with 0.25% pastures intermediate (8.2 AU ha⁻¹). Additionally, pastures supplemented at 1.00% BW supported more (P < 0.05) gain per unit area (851 kg ha⁻¹) than pastures supplemented at 0.00 or 0.25% (431 and 575 kg ha⁻¹, respectively). Thus, supplementation of stocker calves with DDG at the 1% level, especially B. indicus, may be a viable option for increased performance from stocker cattle, as well as increased stocking density, on bermudagrass pastures, depending on the economic factors of the current market.