Drake is a cultivar of Chinese Elm, Ulmus parvifolia. Drake is semi-evergreen, but most Chinese Elm cultivars (and most grown from seed) are deciduous.

What likely happened is one of two scenarios:

1. The tree *was* a Drake - a drake scion was grafted to a Chinese Elm Seedling rootstock, but the scion died and the rootstock sent another shoot up to replace it. Since the shoot came from the seedling rootstock, it probably loses its leaves in fall when most other Chinese elms do.

2. It is a different cultivar entirely (like "Allee" or "Athena") that is fully deciduous, but was mislabeled as 'Drake'.

So it's probably the same species of tree, so looks similar enough, but does not posess the semi-evergreen trait that 'Drake' has.

To know for sure, see if you could get us some pictures - one whole shot of the entire tree, a leaf closeup, and maybe a picture of the trunk and base of the tree so we can see if there's a graft, etc.

There is a row of Drake Elms along a road near the stadium here. I forget how many, but close to two dozen. All but one or two lose their leaves in winter. I would imagine the landscapers planted all those trees from the same batch.