Return first match of Ruby regex

match = string.match(/regex/)[0].to_s

irb(main):003:0> names = "erik kalle johan anders erik kalle johan anders"
=> "erik kalle johan anders erik kalle johan anders"
irb(main):004:0> names[/kalle/]
=> "kalle"

/regexp/ =~ "string"

matchData = "string string".match(/string/)
matchData[0]    # => "string"
matchData[1]    # => nil - it's the first capture group not a second match