NEW YORK: Mike Tyson was an unexpected visitor to Grand Central Station here on Tuesday to watch World heavyweight boxing champion Lennox Lewis workout before a lunch-time crowd of about 250. Lewis did not see Tyson, but said later: “I am impressed that he graced my workout”. Few saw Tyson in the crowd, but Ed Keenan of a public relations company, which organised the exhibition, said: “I saw him. He walked in briefly and walked out.”