BARCELONA, June 15 : Lewis Hamilton is in the Formula One title reckoning and will be hard to stop now that he is a grand prix winner with Ferrari, according to his former Mercedes team boss Toto Wolff. Sunday's Barcelona-Catalunya Grand Prix saw the seven-time world champion take a first win for Ferrari since joining in January last year and left him second overall and 41 points behind Mercedes' championship leader Kimi Antonelli. "I'd rather not fight with him for a title because I know what