def read_best_fit(path):
    """
    Return a 2-tuple consisting of the name and the best-fit objective function value, 
    given the path to sorted_params.txt
    """    
    
    with open(path) as f:
        f.readline() # header
        line = f.readline() # first pset (best)
        parts = line.split()
        name = parts[0]
        value = float(parts[1])
    return (name, value)