[['rnd', 'circuit', 'gto winning team', 'gtu winning team', 'to winning team', 'tu winning team', 'results'], ['1', 'sebring', '59 dave helmick', '27 don lindley', '17 vince gimondo', '112 jim grob racing', 'results'], ['1', 'sebring', 'peter gregg hurley haywood dave helmick', 'don lindley stephen behr brian goellnicht', 'vince gimondo billy dingman', 'jim grob juan montalvo', 'results'], ['2', 'daytona', '59 brumos porsche - audi corp', '32 bob bergstrom', '88 carter racing services', '112 jim grob racing', 'results'], ['2', 'daytona', 'peter gregg hurley haywood', 'bob bergstrom jim cook', 'maurice carter', 'jim grob juan montalvo', 'results'], ['3', 'pocono', '1 toad hall motor racing', '62 bob bergstrom', '88 carter racing services', '90 z & w mazda', 'results'], ['3', 'pocono', 'mike keyser stephen behr', 'bob bergstrom jim cook', 'maurice carter tony delorenzo', 'ray walle bob speakman richard schuck', 'results'], ['4', 'daytona', '96 gene felton', '62 bob bergstrom', '88 carter racing services', '32 bmw', 'results'], ['4', 'daytona', 'gene felton', 'bob bergstrom', 'maurice carter', 'phil dermer', 'results'], ['5', 'mid - ohio', '1 toad hall motor racing', '62 bob bergstrom', '3 ausca , inc', '60 auto sport by jiri', 'results'], ['5', 'mid - ohio', 'mike keyser bob beasley', 'bob bergstrom jim cook', 'harry theodoracopulos horst kwech', 'dave nicholas john magee', 'results'], ['6', 'lime rock', '1 toad hall motor racing', '62 bob bergstrom', '18 warren agor', '60 auto sport by jiri', 'results'], ['6', 'lime rock', 'mike keyser', 'bob bergstrom', 'warren agor', 'dave nicholas', 'results'], ['7', 'lime rock', '59 peter gregg', '74 ludwig heimrath', '18 warren agor', '60 john magee', 'results'], ['7', 'lime rock', 'peter gregg', 'ludwig heimrath', 'warren agor', 'john magee', 'results'], ['8', 'road atlanta', '59 peter gregg', '74 ludwig heimrath', '3 ausca', 'no finishers', 'results'], ['8', 'road atlanta', 'peter gregg', 'ludwig heimrath', 'horst kwech', 'no finishers', 'results'], ['9', 'irp', '59 peter gregg', '74 ludwig heimrath', '3 ausca', '90 z & w mazda', 'results'], ['9', 'irp', 'peter gregg', 'ludwig heimrath', 'harry theodoracopulos horst kwech', 'ray walle ray kraftson', 'results'], ['10', 'daytona', '59 peter gregg', '74 ludwig heimrath', '18 warren agor racing', '35 bmw', 'results']]
2 round , 6 and 7 , were held consecutively at Lime Rock
2 round , [ENT] and [ENT] , were held consecutively at [ENT]