| First: | RU |
| Derek Hallas | |
| Birth Place: | Leeds, England |
| Ru Position: | Centre |
| Ru Year1start: | 195? |
| Ru Year1end: | 53 |
| Club1: | Keighley |
| Year1start: | 1953 |
| Year1end: | 59 |
| Appearances1: | 175 |
| Tries1: | 75 |
| Goals1: | 11 |
| Points1: | 247 |
| Club2: | Leeds |
| Year2start: | 1959 |
| Year2end: | 62 |
| Club3: | Keighley |
| Year3start: | 1962 |
| Year3end: | 63 |
| Appearances3: | 14 |
| Year4start: | 1963 |
| Year4end: | 65 |
| Appearances4: | 43 |
| Tries4: | 8 |
| Goals4: | 7 |
| Fieldgoals4: | 0 |
| Points4: | 38 |
| Ru Teama: | Yorkshire |
| Ru Yearastart: | ≤Dec 1953 |
| Ru Yearaend: | ≤Dec 53 |
| Teama: | Yorkshire |
| Yearastart: | 1953 |
| Yearaend: | ≤63 |
| Teamb: | Great Britain |
| Yearbstart: | 1961 |
| Appearancesb: | 2 |
| Triesb: | 0 |
| Goalsb: | 0 |
| Fieldgoalsb: | 0 |
| Pointsb: | 0 |
| Coachyear1start: | 1974 |
| New: | yes |
| Retired: | yes |
| Updated: | 1 October 2022 |
Derek Hallas (born) is an English former rugby union and professional rugby league footballer who played in the 1950s and 1960s, and coached rugby league in the 1960s. He played representative level rugby union (RU) for Yorkshire, and at club level for Roundhay RFC, as a centre and representative level rugby league (RL) for Great Britain and Yorkshire, and at club level for Keighley (two spells), Leeds, Parramatta Eels and the Inverell Hawks (captain), as a, and coached at club level for the Inverell Hawks.
Derek Hallas was born in Leeds, West Riding of Yorkshire, England, and he was a pupil at Hunslet Carr County Primary School, Hunslet.[1]
Derek Hallas won caps for Great Britain (RL) while at Leeds in 1961 against France, and New Zealand.[2]
Derek Hallas represented Yorkshire (RU) while at Roundhay, and represented Yorkshire (RL) while at Keighley.
Derek Hallas played at and scored two tries, in Leeds' 25–10 victory over Warrington in the Championship Final during the 1960–61 season at Odsal Stadium, Bradford on Saturday 20 May 1961, in front of a crowd of 52,177.[3]
Derek Hallas played rugby union for Roundhay RFC, switching code to rugby league, he signed for Keighley in December 1953, signing for Leeds in January 1959 for £4,000 (based on increases in average earnings, this would be approximately £195,800 in 2016),[4] he resigned for Keighley in October 1962 for £3,000 (based on increases in average earnings, this would be approximately £124,100 in 2016),[4] before signing for Paramatta in April 1963.