I didn't make this scan; I found it here https://www.myminifactory.com/object/discobolus-at-the-british-museum-london-7896 (BTW their Scan The World program is fantastic!).
I believe this discobolus is a modern retake because the head position is the same as the wrongly restored (thus unique) British Museum replica (see http://www.thingiverse.com/thing:1894078 and my no-support remix http://www.thingiverse.com/thing:2026127), yet obviously different and noticeably more muscular. Authenticity aside, this version arguably has a more impressive physique and probably looks better on your table.
Support just isn't my thing (hate to remove it and hate it more when it leaves a scar on a beautiful model), so I cut the model up into four pieces that can be printed with almost no support and then glued together. See instruction below. My result (150% scale) came out pretty nice. Enjoy!
Prime your plate with hairspray to avoid warping, otherwise the pieces won't join perfectly.
Print the base and left arm w/o support.
Print the right arm with support everywhere at 75 degrees so only the four fingers and the bottom of the discus are supported.
Print the torso with support touching bed at 75 degrees so only two armpits are supported.
Clean and glue with E6000 (superglue dries too quickly for alignment adjustments).
Put on table and admire ancient ingenuity!