The crowd stood to observe a minute's silence in honour of Greig, who died last weekend aged 66 from a heart attack while battling lung cancer.
Greig's trademark sunhat sat on top of the stumps at the member's end before play, before being taken away by his sons Mark and Tom, who like many in the stands were also wearing wide brimmed hats as a token of respect.
The sons embraced before heading from the ground before the start of play.
Greig's family and the Channel 9 commentary team were invited by opposing captains Michael Clarke and Mahela Jayawardene to join the players and officials on the SCG before play.
His wife Vivian was overcome by the outpouring of emotion, saying on Test eve: "I just wish he could have seen it."
"I'm so grateful, truly grateful.
"For Channel 9 and Cricket Australia to organise this tribute to him is truly touching.
"Channel 9 has been like a family. They have been working together for such a long time."
The SCG Trust had urged fans to wear Greig-style wide brimmed hats, and thousands did.
Australian captain Clarke also wore a neckerchief, in Tony Greig style, as a personal tribute, as he led the Australians onto the field.