Based on all the stuff going around comparing Damien to Derrick Rose, Russell Westbrook, etc., I decided to look back at combine measurements (here) and see how he lined up with them (plus who else makes for good comparisons). I'm just looking at PGs from the recent past who ended up top-15 picks (numbers after the jump...). And of course, this is just looking at his body and athleticism, not skillset, but I think time will show those comparisons valid as well.
Lillard measured at 6'1.75" (these are all without shoes), 189lbs, with 6'7.75" wingspan. How does that match up with the above comparisons? Rose was 6'1.5", 196lbs, with 6'8" wingspan, and Westbrook was 6'2.25", 192lbs, with 6'7.75" wingspan. Those are all extremely close; the physique comparisons are dead on.
Who else does he look like coming out of the combine? Brandon Knight was 6'1.5", 177lbs, with 6'6.75" wingspan. Deron Williams was 6'1.75", 202lbs, 6'6.25" wingspan. Devin Harris was 6'1.75", 170lbs, with 6'7.5" wingspan. Antonio Daniels was 6'2", 197lbs, with 6'8" wingspan. Those are the closest that I have access to measurements for (Kyrie Irving, Jared Bayless, and Steph Curry are similar on height and weight but with much smaller wingspans).
What about the athletic testing? Rose and Lillard are definitely the best of the comparison group in vertical leap (identical 34.5" no-step, and 40" vs. 39.5" max); interesting to note that Westbrook (who is known as a real high-flyer) was about 4" behind them in each. Bench press stats also seem to show we shouldn't be worried about his strength; Lillard's 13 reps trailed only D-Will's 15 (Westbrook and Rose with 12 and 10, Harris well behind at 5).
Lillard's agility test times are middle-of-the-pack. The only area where he trails his competitors is the sprint. While Rose and Westbrook put up otherwordly times (3.05 and 3.07), Lillard was at 3.34 (trailing D-Will's 3.25 among the comparison group). So he may not be as fast end-to-end as the guys he's most compared to (to be fair, no one in the NBA is), but otherwise he compares very well (in physique, leaping, strength, etc.).
Of course, one caveat to note is that Lillard was 2 years older than those guys when drafted, but he's still definitely young enough to develop similarly.